Project in Statistics

Anonymous
timer Asked: Jul 2nd, 2018
account_balance_wallet $80

Question description

The project is about generating printouts and and answering some questions about it

all the instructions are in the file.

After collecting the data pleas attach it in an Excel file beside the project file which is in word file.

** You need to have program called Statistix 10 or similar one in order to get the needed results from the original printout **

The files I upload are about :

How to collect the data , A chart of all the requirements in this project and its points, The project file which include the questions that need to be answered

Project in Statistics
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Data: The goal of the project assignments is to allow you to get hands-on experience analyzing and interpreting data using the techniques we learn throughout the semester. To facilitate this, I have limited you to the type of data that you are allowed to collect. I have listed below three possible sources of data. Choose any of the three to use for your project. Automobile Data – collect data from 25 used automobiles from each of three comparable car brands (cars in the same automobile class). The variables that you will enter will be Asking Price, Mileage of the vehicle, and the Model of the Car (enter the model as either 1, 2, or 3). Your data set should consist of a total of 75 cases with three variables. Sources: internet sites such as craigslist, newspaper, auto trader magazines. To collect the data about the automobile you should search for cars in craigslist website in the US www.craigslist.org 1. Toyota Camry 2. Honda Accord 3. Hyundai Sonata It doesn’t matter the year of the car. The needed information are the asking price, mileage and model as it was stated above. You can just list all of them in three columns under each other until it reaches 75 using Excel and then use the date in the Statistix program or similar one. Ideally, you would take a random sample from the population that you are working with. For the project assignments, it is more important to get your data collected quickly, so I will not worry about the randomness of your data. For clarity, your data set should consist of a total of 75 observations (3 locations/models each with 25 observations) with three variables each. This data set will be used for you on all four project assignments (called Project 1, Project 2, Project 3 and Project 4). More details will follow regarding the specifics of what will be required of you on the projects as well as demonstrations on how to create the printouts that you will need using the Statistix software. For project purposes, I will refer to the variables collected using the following symbols: y = price variable (rent or price) x1 = size or mileage variable (depending on data set) x2 = location or model variable (depending on data set)
QMB 3200 Project 1 NAME _________________________ Summer 2018 Directions: 4. 1. Choose one of the data sets assigned in Canvas and enter the data into a Statistix data file. 2. Use the Statistix program to create the printouts requested in this project. 3. Attach the requested printouts to the project as I have directed and answer the questions that I have asked in the space provided. Upload this project in Canvas prior to midnight on July 2nd. 1. Create a printout that provides a listing of the data that you entered into Statistix. It should show the 75 cases that you entered and contain three columns of data. Label this printout as DATA PRINTOUT and attach it to the back of this project. a. Describe for me the quantitative variables you collected in your data set: (4 points) QN #1: QN #2: b. Identify for me what/where the levels 1, 2, and 3 of your qualitative variable represent. (3 points) Level 1: Level 2: Level 3: c. Identify the experimental unit for your data set. (2 points) d. Create a stem-and-leaf display of your price variable. Label this printout as Stem-and-Leaf PRINTOUT and attach it here. Describe the shape of the prices you observe in the plot. (3 points) Attach printout here using a 10-pt font 2. Use Statistix to create the descriptive statistics for the two quantitative variables that you collected data for. Make sure to include the n, minimum and maximum values, mean, median, standard deviation, and the confidence interval endpoints for a 92% confidence interval. Paste the printout in the space provided here and answer the following questions. Descriptive Statistics printout a. For your Price variable, interpret the standard deviation by giving me a range in which you think “most” of the values (i.e., the x’s) will fall. (Hint: you may need to do some math here) (3 points) b. Find the 92% confidence interval for estimating the mean mileage or size of your data set (2 points) c. Give a practical interpretation for the interval specified in part b. (4 points) d. Explain what you mean when you say that you are “92% confident” in the practical interpretation above in part c. (2 points) e. What assumption(s) is/are necessary for this analysis to be valid? Make sure you state your answer in the words of the problem (4 points) 3. TESTS OF HYPOTHESIS: Use Statistix to create a printout to conduct the appropriate test for the data set you worked with: Use only model/location 1 in this analysis. Apartment Data Set: Test to determine if the average size differed from 700 square feet. Automobile Data Set: Test to determine if the average mileage differed from 30,000 miles. Home Data Set: Test to determine if the average size of the home differed from 1,800 square feet. Copy the results here and answer the following questions. One-Sample T Test printout a. State the null and alternative hypotheses that are being tested with the specified test. (3 points) Ho: Ha: b. Identify the test statistic and p-value you will use in this test of hypothesis (2 points) Test Statistic: ____________ P-value: ___________ c. What assumption(s) is/are necessary for this analysis to be valid? Make sure you state your answer in the words of the problem (4 points) c. Make a conclusion for the test of hypothesis conducted above. You should choose . (4 points)
7/2/2018 Project 1 - Due July 2 Criteria Quantitative Variables Must have 2 Qualitative Variable Accurately Defined and Stated Experimental Unit Ratings Pts 4.0 pts Full Marks 2.0 pts Missing one 0.0 pts Missing Both Variables Missing a variable or did not define variable correctly Missing both variables or did not define variable correctly 3.0 pts Full Marks 2.0 pts Missing Level 2.0 pts Full Marks 1.0 pts Missing Levels 0.0 pts Missing All Levels 1.0 pts Inaccurately Defined Exp. Unit Must have the correct printout, and describe the shape of the distribution correctly Standard Deviation Correct Calculation using either Chebyshev or modified Empirical depending on distribution of Steam and leaf plot Confidence Interval 3.0 pts Full Marks 2.0 pts Incorrectly Described Shape of Distribution 3.0 pts Full Marks 2.0 pts Wrong use of measurement 2.0 pts Full Marks 2.0 pts Printout Error 2.0 pts 0.0 pts Printout Error & Description 3.0 pts 1.0 pts Did not multiply SD Did not correctly select the appropriate measure of calculation 1.0 pts One correct endpoint 0.0 pts No Marks 0.0 pts Incorrect Endpoints Correct Endpoints Confidence Interval Interpretation We are 92% confidence that mean mileage/size of all automobiles/homes/apts falls between # and # 4.0 pts Full Marks 3.0 pts Missing one piece 2.0 pts Missing 2 pieces/Words of the Problem 1.0 pts Missing Multiple pieces Is missing information or did not state the answer in the words of the problem Theoretical Interpretation In repeated sampling 92% of the intervals created would contain mu. Assumptions 1 2.0 pts Full Marks 1.0 pts Incorrect Interpretation Did not correctly use the theoretical interpretation. 4.0 pts Full Marks https://usflearn.instructure.com/courses/1281532/assignments/5960759?module_item_id=11957471 3.0 pts 2.0 pts 0.0 pts Incorrect Interpretation Did not have an accurate understanding of the interpretation concept 1.0 pts Intervals containing true population mean 2.0 pts Use of normal assumption 3.0 pts 0.0 pts No Marks Correctly identified the experimental unit Steam-and-Leaf Plot 4.0 pts 0.0 pts No Marks 0.0 pts No Marks 4.0 pts 2.0 pts 4.0 pts 3/4 7/2/2018 Project 1 - Due July 2 Criteria Null and Alternative Correct use of mu, differs from, inequality symbols, and numerical value to test T-Stat and P-value Ratings 3.0 pts Full Marks 2.0 pts Missing one piece 2.0 pts Full Marks Pts 1.0 pts Missing multiple pieces 1.0 pts Missing Information 0.0 pts No Marks 0.0 pts No Marks Correct identification of p-value and t-stat Assumptions 2 Correct use of assumptions in the words of the problems Test of Hypothesis conclusion At α= #, we (fail to) reject Ho. There is (in)sufficient evidence to indicate that the mean mileage/size of all [model/location 1] homes/apt/cars differs from # unit of measurement. 4.0 pts Full Marks 2.0 pts Missing information/Words of the problem 4.0 pts Full Marks 3.0 pts Missing 1 piece Is missing information or did not state correctly in the words of the problem. 2.0 pts Missing 2 pieces/Words of the Problem Is missing information or did not correctly use the words of the problem 1.0 pts Missing Multiple pieces 0.0 pts No marks 3.0 pts 2.0 pts 4.0 pts 0.0 pts No Marks 4.0 pts Total Points: 40.0 https://usflearn.instructure.com/courses/1281532/assignments/5960759?module_item_id=11957471 4/4

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psumanrec
School: UCLA

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Anonymous
Outstanding Job!!!!

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