STAT 3001 Abraham Lincoln University Week 2 Histograms & Descriptive Numbers Worksheet

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zndhrra

Mathematics

STAT 3001

Abraham Lincoln University

STAT

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Instructions: To complete this project, you will need the following materials:Instructions:To complete this project, you will need the following materials:

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Week 2 Project - STAT 3001 Student Name: Date: Instructions: To complete this project, you will need the following materials: • • STATDISK User Manual (found in the classroom on the Project resource page) Access to the Internet to download the Statdisk program. This assignment is worth a total of 60 points. You don’t have to explain your steps unless the problem instructs you to. Part I. Histograms and Frequency Tables Instructions Answers 1. Open the Car Crash Tests data using menu option Datasets and then Elementary Stats, 13th Edition. This file contains information on measurements from cars crashed into a barrier at 35 mph. The definition of the variables is given at the end of this report. What are the names of the variables in this file? 2. Create a histogram for the FEMER L column using a user defined plot option with a class width of 250 and class start of 0. Be sure to click Bar Labels on. Paste the chart here: 3. Using the information in the above histogram, complete this table. Height Frequency 0-250 250-500 500-750 750-1000 1000-1250 1250-1500 1500-1750 1 Relative Frequency Cumulative Frequency a. Using the frequency table above, how many car crashes resulted in load on the left femur of 500-750 in- lb? How do you know? b. Using the frequency table above, how many car crashes resulted in load on the left femur of less than 1000 in-lb? Explain your answer. c. What percent of car crashes resulted in load on the left femur of more than 500 in-lb? Explain your answer. Part II. Comparing Datasets Instructions Answers 1. Create a modified boxplot that compares measured load on the left and right femur (FEML and FEMR) Paste it here. 2. Describe the similarities and differences in the data sets. Look at the quartiles, range, outliers (shown as asterisks). Please be specific to the graph created. Part III. Finding Descriptive Numbers Instructions Answers 3. Open the Freshman 15 data using menu option Datasets and then Elementary Stats, 13th Edition. This data compares the weight and BMI for freshmen in September and again in April. What are the names of the variables? 4. Find the mean, median, and midrange for the Data in Column 2, WT SEPT. 2 5. Find the Range, variance, and standard deviation Column 2, WT SEPT. 6. List any values for Column 2, WT SEPT. that you think may be outliers. Why do you think that? [Hint: Create a modified boxplot, sort the data, and look at the smallest and largest values.] 7. Find the Mean, median, and midrange for the data in Column 3, WT APRIL. 8. Find the Range, variance, and standard deviation for the data in Column 3, WT APRIL. 9. List any values for Column 3, WT APRIL that you think may be outliers. [Hint: Create a modified boxplot, sort the data, and look at the smallest and largest values.] 10. Find the five-number summary for the data in Columns 2 and 3. You will need to label each of the columns with an appropriate measure in the top row for clarity. 11. Compare the weights in September and April using a boxplot of Columns 2 and 3. Paste your boxplot here. 12. Create a histogram for the Column 2, WT SEPT data using the Auto-fit option. 13. Create a histogram for the Column 3, WT APRIL data using the Auto-fit option.. 3 Submit your final draft of your Word file by going to Week 2, Project, and follow the directions under Week 2 Project. Please use the naming convention "WK2Proj+last name+first initial." as the Submission Title. Variables - Car Crash Tests HIC is a measurement of a standard head injury criterion Chest is the chest deceleration (g) FEML is the measured load on the left femur ((in-lb) FEMR is the measured load on the right femur ((in -lb) TTI is a measurement of the side thoracic trauma index PLVS is pelvis deceleration 4
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Week 2 Project - STAT 3001
Student Name:
Date:
Part I. Histograms and Frequency Tables
Q
Answers
1.

The variable names are; CAR, SIZE, HIC, CHEST, FEMUR L, FEMUR R, TTI,
and PELVIS.

2.

3.

Height

a.

Frequency

Relative
Frequency

Cumulative
Frequency

0-250
2
9.52%
2
250-500
10
47.62%
12
500-750
3
14.29%
15
750-1000
4
19.05%
19
1000-1250
1
4.76%
20
1250-1500
0
0.00%
20
1500-1750
1
4.76%
21
To determine the number of car crashes ...


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