The height of 1 story on a blueprint
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A building blueprint has a scale of 2 inches equal to 25 feet. On the blueprint, the 10-story building has a height of 12 inches. What is the actual height of 1 story?
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Johns Hopkins University Statistics Programming Report
We are interested in the question of whether female users have higher rates of daily sessions than other users do. What ki ...
Johns Hopkins University Statistics Programming Report
We are interested in the question of whether female users have higher rates of daily sessions than other users do. What kind of parameter should we select as our metric for each group?Use the data to estimate the values of your selected parameter for female users and for other users.Does there appear to be an observed difference between the groups? Without performing statistical tests, would you consider this difference to be meaningful for the business? Explain your answer.Which statistical test would be appropriate for testing the two groups for differences in their daily sessions according to your selected metric?How many samples (groups) are included in your selected statistical test?How many tails are considered in your selected statistical test?Perform your selected statistical test. Report a p-value for the results.How would you interpret this finding for the product’s managers of the digital application? Make sure to frame the result in terms that will be meaningful for their work.The product’s managers are also interested in the age groups that tend to use the product and how they vary by country. Create a table with the following characteristics:Each row represents an age group.Each column represents a countryEach listed value shows the number of users of that age group within that country.Now convert the previous table of counts by age group and country into percentages. However, we want the percentages to be calculated separately within each country. Show the resulting table as percentages (ranging from 0 to 100) rounded to 1 decimal place.Without performing any statistical tests, do you think that each country has a similar distribution of users across the age groups? Explain why or why not.Which statistical test would help you determine if there are age-based differences across these countries? Explain why you selected this test.What is the value of the test statistic for your selected test? Calculate this answer independently without using an existing testing function. (You may use such a function to check your answer.) Show your code along with the result.What is the p-value for this test? Calculate this answer independently without using an existing testing function. (You may use such a function to check your answer.) Show your code along with the result.How would you interpret this finding for the product’s managers of the digital application? Make sure to frame the result in terms that will be meaningful for their work.Canada and the United States are geographically connected and often having overlapping media markets. We can place them in one group and compare them to a second group with Australia and the United Kingdom. Do these two groups have similar rates of users who remain active at 30 days? Perform a statistical test, explain why you selected it, and interpret the results.The application’s managers would like to study the relationship between daily sessions and subscriptions. Anecdotally, they think that having at least 1 session per day could be a meaningful indicator. Using the outcome of subscriptions at 30 days, compare the rates of subscriptions for users with at least 1 daily session to those with fewer. Perform a statistical test, explain the reasons for your selection, and interpret the results.What type of study was conducted? Are there any concerns about the analyses based upon the method of research?How actionable are the findings of this analysis? Do the independent variables help us to make choices about how to improve the outcomes of activity and subscription at 30 days?What else could you recommend to the managers of the product for improving their preferred outcomes of activity and subscriptions at 30 days? Provide a number of strategic recommendations that are actionable, measurable, and amenable to experimentation.
PUBH 8545 Big Data and Health Care Research Paper
With advances in medical-records management and the ability to store massive amounts of data, opportunities for analyzing ...
PUBH 8545 Big Data and Health Care Research Paper
With advances in medical-records management and the ability to store massive amounts of data, opportunities for analyzing health information have grown in almost unimaginable proportions in the past decade. “Simple” databases with thousands of fields now seem quaint and almost irrelevant, as “big data” appears on the horizon as the emerging answer to many health-related data questions.However, the concept of big data has as many detractors as supporters, and arguments range from big data being the answer to reducing costs and improving health care, to big data potentially leading to discrimination and total government or corporate control.For this Discussion, you will investigate how big data have been applied to health care, and you will consider the potential use of big data by medium and small local health jurisdictions.To prepare:Select a published article on big data and health care from the Walden Library that discusses trends, potential use, or issues related to using big data in health care.Post analysis of the article you selected. Include the following in your post:A brief description of the published article you selected, including:research question,dataset used, andsource of the data.An explanation of your position on the use of big data for health care. Do you think that analyzing and using big data in health care can provide crucial answers and lead to great innovation and breakthroughs?To what extent do you think that privacy and data security concerns and the potential misuse of data outweigh the potential advantages? Justify your position.Using examples, describe how local health authorities can use secondary data sources in their jurisdictions.Support your post based on the Learning Resources and current literature. Use APA formatting for your Discussion and to cite your resources. ResourcesLee, C., Famoye, F., Shelden, B., & Brown, A. (n.d.a). Data manipulation. SPSS On-Line Training Workshop. Retrieved from http://calcnet.mth.cmich.edu/org/spss/data_manipulation.htmHellerstein, J. M. (2008). Quantitative data cleaning for large databases. Retrieved from http://db.cs.berkeley.edu/jmh/papers/cleaning-unec...
SU Wk 5 Central Limit Theorem Quantitative Data in Math Exams Worksheet
Discussion C: Central Limit TheoremWeek 5 Post (300+ words):Collect some quantitative data (if your data from week 1 is qu ...
SU Wk 5 Central Limit Theorem Quantitative Data in Math Exams Worksheet
Discussion C: Central Limit TheoremWeek 5 Post (300+ words):Collect some quantitative data (if your data from week 1 is quantitative, you can use it). Find the sample mean and standard deviation. Plot it in a histogram. Does the data seem to follow the bell curve of the normal distribution? What features of the data do or do not fit in with the shape of the normal curve. How much deviation from the curve is to be expected?Now perform a normality test on your data (Shapiro-Wilk test: http://sdittami.altervista.org/shapirotest/ShapiroTest.html or http://www.brianreedpowers.com/MAT240/stats/descriptiveStats.html)– the test will give you a p-value. The higher the p-value, the more closely your data follows the normal distribution. Based on the test, do you think your data could have been drawn from a normal distribution?Week 6 Responses (100+ words x2):Choose two of your classmates’ data sets. Take 30 random samples of 5 data points each (one way: Past the data here http://www.randomizelist.com/ randomize the list and take the first 5 numbers, or use the sampling feature at http://www.brianreedpowers.com/MAT240/stats/descriptiveStats.html), and calculate the average for each of these samples. You will now have 30 sample means. Create and post a histogram for your sample means. What is the mean of these means? What is the standard deviation? Does this make sense based on the Central Limit Theorem? Do the sample means follow a normal distribution? What p-value does the normality test give? How and why does this differ from the original data?REPLY MY CLASSMATE: Jasmine AliceaThe quantitative data I chose to use was the number hours I slept on an average week, as discussed from my previous post. Finding the mean (or average) of my numbers, simply list all variables in ascending order à 6.5,7,7,7,7.5,8,9. Add all the variable to equal one sum (=52). Then divide by the number of numbers presented. 52/7= 7.428. We want to present the sum to the nearest hundredth; to do so, we need to round up (7.43). To find the median, we need find the middle number between all variables. Fortunately, I have 7 variables and can find the median between the first three numbers and last three numbers (7).Standard DeviationEquation for standard Deviation for sample is as follows:Sample Deviationà Sample(x)=n−1∑∣x−xˉ∣2 = Square root of unbiased sample variancePopulation Deviation equationà σ=N∑(xi−μ)2∑= “sum of”X= is a value in the data setμ=is the mean of the data setN= is the number of data points in the population (not used for this week’s discussion N-1= is used for dealing with a sample variable. (we are using in this week’s discussion)To find the sample subtract the variable by the mean times square- Add them together and then divide by mean.S-(squared)(6.5-7) sq+(7-7)sq+(7-7)sq+(7-7)sq+(7.5-7)sq+(8-7)sq+(9-7)sq7-1n-1 (mean)0.25+0+0+0.25+1+4= 5.5/6= à0.93 Unbiased sample varianceS= sq root of unbiased sample variance à 0.93 squared = 0.86 Sample standard deviationFrequency Histogram4321>=0 2 4 6 8 10I’m not sure if the histogram follows the bell curve of a normal distribution, as I am still trying to see how all the different representations equal the original data; hours I sleep per week. If I am analyzing it visually, I can see how the average time in hours I sleep will be 7, as the spike in the bell curve is narrow and in between 6-9. It does represent a normative distribution.The deviation from the curve is skewed to the right. If my calculations are correct, I sleep on average 7 hours and 45mins but on a good night’s rest 8 ½ hours, and a not-so-great night, 6 hours.The Shapiro-Wilk test is usually recommended for data with <10 variables. It provides a Null Hypothesis (sample size of n comes from a normal distribution).Results: Shapiro-Wilk Normality Testn = 7Mean = 7.428571428571428SD = 0.8380817098475258W = 0.885157374718934Threshold (p=0.01) = 0.7300000190734863 --> HO acceptedThreshold (p=0.05) = 0.8029999732971191 --> HO acceptedThreshold (p=0.10) = 0.8379999995231628 --> HO accepted--> “Your data seems normal”REPLY TO MY CLASSMATE:Tabitha ThuguriThe central limit theorem states that the sampling distribution of any statistic will be normal or nearly normal, if the sample size is large enough. Requirements for accuracy.The more closely the sampling distribution needs to resemble a normal distribution, the more sample points will be required. Requirements for accuracy.The more closely the sampling distribution needs to resemble a normal distribution, the more sample points will be required.
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Johns Hopkins University Statistics Programming Report
We are interested in the question of whether female users have higher rates of daily sessions than other users do. What ki ...
Johns Hopkins University Statistics Programming Report
We are interested in the question of whether female users have higher rates of daily sessions than other users do. What kind of parameter should we select as our metric for each group?Use the data to estimate the values of your selected parameter for female users and for other users.Does there appear to be an observed difference between the groups? Without performing statistical tests, would you consider this difference to be meaningful for the business? Explain your answer.Which statistical test would be appropriate for testing the two groups for differences in their daily sessions according to your selected metric?How many samples (groups) are included in your selected statistical test?How many tails are considered in your selected statistical test?Perform your selected statistical test. Report a p-value for the results.How would you interpret this finding for the product’s managers of the digital application? Make sure to frame the result in terms that will be meaningful for their work.The product’s managers are also interested in the age groups that tend to use the product and how they vary by country. Create a table with the following characteristics:Each row represents an age group.Each column represents a countryEach listed value shows the number of users of that age group within that country.Now convert the previous table of counts by age group and country into percentages. However, we want the percentages to be calculated separately within each country. Show the resulting table as percentages (ranging from 0 to 100) rounded to 1 decimal place.Without performing any statistical tests, do you think that each country has a similar distribution of users across the age groups? Explain why or why not.Which statistical test would help you determine if there are age-based differences across these countries? Explain why you selected this test.What is the value of the test statistic for your selected test? Calculate this answer independently without using an existing testing function. (You may use such a function to check your answer.) Show your code along with the result.What is the p-value for this test? Calculate this answer independently without using an existing testing function. (You may use such a function to check your answer.) Show your code along with the result.How would you interpret this finding for the product’s managers of the digital application? Make sure to frame the result in terms that will be meaningful for their work.Canada and the United States are geographically connected and often having overlapping media markets. We can place them in one group and compare them to a second group with Australia and the United Kingdom. Do these two groups have similar rates of users who remain active at 30 days? Perform a statistical test, explain why you selected it, and interpret the results.The application’s managers would like to study the relationship between daily sessions and subscriptions. Anecdotally, they think that having at least 1 session per day could be a meaningful indicator. Using the outcome of subscriptions at 30 days, compare the rates of subscriptions for users with at least 1 daily session to those with fewer. Perform a statistical test, explain the reasons for your selection, and interpret the results.What type of study was conducted? Are there any concerns about the analyses based upon the method of research?How actionable are the findings of this analysis? Do the independent variables help us to make choices about how to improve the outcomes of activity and subscription at 30 days?What else could you recommend to the managers of the product for improving their preferred outcomes of activity and subscriptions at 30 days? Provide a number of strategic recommendations that are actionable, measurable, and amenable to experimentation.
PUBH 8545 Big Data and Health Care Research Paper
With advances in medical-records management and the ability to store massive amounts of data, opportunities for analyzing ...
PUBH 8545 Big Data and Health Care Research Paper
With advances in medical-records management and the ability to store massive amounts of data, opportunities for analyzing health information have grown in almost unimaginable proportions in the past decade. “Simple” databases with thousands of fields now seem quaint and almost irrelevant, as “big data” appears on the horizon as the emerging answer to many health-related data questions.However, the concept of big data has as many detractors as supporters, and arguments range from big data being the answer to reducing costs and improving health care, to big data potentially leading to discrimination and total government or corporate control.For this Discussion, you will investigate how big data have been applied to health care, and you will consider the potential use of big data by medium and small local health jurisdictions.To prepare:Select a published article on big data and health care from the Walden Library that discusses trends, potential use, or issues related to using big data in health care.Post analysis of the article you selected. Include the following in your post:A brief description of the published article you selected, including:research question,dataset used, andsource of the data.An explanation of your position on the use of big data for health care. Do you think that analyzing and using big data in health care can provide crucial answers and lead to great innovation and breakthroughs?To what extent do you think that privacy and data security concerns and the potential misuse of data outweigh the potential advantages? Justify your position.Using examples, describe how local health authorities can use secondary data sources in their jurisdictions.Support your post based on the Learning Resources and current literature. Use APA formatting for your Discussion and to cite your resources. ResourcesLee, C., Famoye, F., Shelden, B., & Brown, A. (n.d.a). Data manipulation. SPSS On-Line Training Workshop. Retrieved from http://calcnet.mth.cmich.edu/org/spss/data_manipulation.htmHellerstein, J. M. (2008). Quantitative data cleaning for large databases. Retrieved from http://db.cs.berkeley.edu/jmh/papers/cleaning-unec...
SU Wk 5 Central Limit Theorem Quantitative Data in Math Exams Worksheet
Discussion C: Central Limit TheoremWeek 5 Post (300+ words):Collect some quantitative data (if your data from week 1 is qu ...
SU Wk 5 Central Limit Theorem Quantitative Data in Math Exams Worksheet
Discussion C: Central Limit TheoremWeek 5 Post (300+ words):Collect some quantitative data (if your data from week 1 is quantitative, you can use it). Find the sample mean and standard deviation. Plot it in a histogram. Does the data seem to follow the bell curve of the normal distribution? What features of the data do or do not fit in with the shape of the normal curve. How much deviation from the curve is to be expected?Now perform a normality test on your data (Shapiro-Wilk test: http://sdittami.altervista.org/shapirotest/ShapiroTest.html or http://www.brianreedpowers.com/MAT240/stats/descriptiveStats.html)– the test will give you a p-value. The higher the p-value, the more closely your data follows the normal distribution. Based on the test, do you think your data could have been drawn from a normal distribution?Week 6 Responses (100+ words x2):Choose two of your classmates’ data sets. Take 30 random samples of 5 data points each (one way: Past the data here http://www.randomizelist.com/ randomize the list and take the first 5 numbers, or use the sampling feature at http://www.brianreedpowers.com/MAT240/stats/descriptiveStats.html), and calculate the average for each of these samples. You will now have 30 sample means. Create and post a histogram for your sample means. What is the mean of these means? What is the standard deviation? Does this make sense based on the Central Limit Theorem? Do the sample means follow a normal distribution? What p-value does the normality test give? How and why does this differ from the original data?REPLY MY CLASSMATE: Jasmine AliceaThe quantitative data I chose to use was the number hours I slept on an average week, as discussed from my previous post. Finding the mean (or average) of my numbers, simply list all variables in ascending order à 6.5,7,7,7,7.5,8,9. Add all the variable to equal one sum (=52). Then divide by the number of numbers presented. 52/7= 7.428. We want to present the sum to the nearest hundredth; to do so, we need to round up (7.43). To find the median, we need find the middle number between all variables. Fortunately, I have 7 variables and can find the median between the first three numbers and last three numbers (7).Standard DeviationEquation for standard Deviation for sample is as follows:Sample Deviationà Sample(x)=n−1∑∣x−xˉ∣2 = Square root of unbiased sample variancePopulation Deviation equationà σ=N∑(xi−μ)2∑= “sum of”X= is a value in the data setμ=is the mean of the data setN= is the number of data points in the population (not used for this week’s discussion N-1= is used for dealing with a sample variable. (we are using in this week’s discussion)To find the sample subtract the variable by the mean times square- Add them together and then divide by mean.S-(squared)(6.5-7) sq+(7-7)sq+(7-7)sq+(7-7)sq+(7.5-7)sq+(8-7)sq+(9-7)sq7-1n-1 (mean)0.25+0+0+0.25+1+4= 5.5/6= à0.93 Unbiased sample varianceS= sq root of unbiased sample variance à 0.93 squared = 0.86 Sample standard deviationFrequency Histogram4321>=0 2 4 6 8 10I’m not sure if the histogram follows the bell curve of a normal distribution, as I am still trying to see how all the different representations equal the original data; hours I sleep per week. If I am analyzing it visually, I can see how the average time in hours I sleep will be 7, as the spike in the bell curve is narrow and in between 6-9. It does represent a normative distribution.The deviation from the curve is skewed to the right. If my calculations are correct, I sleep on average 7 hours and 45mins but on a good night’s rest 8 ½ hours, and a not-so-great night, 6 hours.The Shapiro-Wilk test is usually recommended for data with <10 variables. It provides a Null Hypothesis (sample size of n comes from a normal distribution).Results: Shapiro-Wilk Normality Testn = 7Mean = 7.428571428571428SD = 0.8380817098475258W = 0.885157374718934Threshold (p=0.01) = 0.7300000190734863 --> HO acceptedThreshold (p=0.05) = 0.8029999732971191 --> HO acceptedThreshold (p=0.10) = 0.8379999995231628 --> HO accepted--> “Your data seems normal”REPLY TO MY CLASSMATE:Tabitha ThuguriThe central limit theorem states that the sampling distribution of any statistic will be normal or nearly normal, if the sample size is large enough. Requirements for accuracy.The more closely the sampling distribution needs to resemble a normal distribution, the more sample points will be required. Requirements for accuracy.The more closely the sampling distribution needs to resemble a normal distribution, the more sample points will be required.
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