Descriptive And Inferential Statistics Worksheet 1
Table of Contents
Descriptive And Inferential Statistics
This worksheet provides you with experience in calculating (by hand or using Excel®) formulas from the weekly readings. Using these formulas and performing these calculations provides you with an understanding of how and why statistical formulas work and what they mean. This worksheet also provides you the opportunity to interpret results in the context of specific problems, which assists you in critically evaluating current research in your field.
| TitleABC/123 Version X | 1 |
| Descriptive and Inferential Statistics WorksheetPSYCH/625 Version 5 | 2 |
University of Phoenix Material
Descriptive and Inferential Statistics Worksheet
Complete both Part A and Part B below.
Part A
Before completing the following questions, be sure to have read Appendix C and the Statistical Software Resources at the ends of Chapters 2 and 3 from Statistics Plain and Simple.
Highlight the required answers to the question in your Excel output.
1. Using Microsoft® Excel®, enter the following data from the 40 participants by first creating a variable labeled “Score”. Next, compute the mean, median, and mode for the following set of 40 reading scores:
SUMMARY
| 31 | 32 | 43 | 42 |
| 24 | 34 | 25 | 44 |
| 23 | 43 | 24 | 36 |
| 25 | 41 | 23 | 28 |
| 14 | 21 | 24 | 17 |
| 25 | 23 | 44 | 21 |
| 13 | 26 | 23 | 32 |
| 12 | 26 | 14 | 42 |
| 14 | 31 | 52 | 12 |
| 23 | 42 | 32 | 34 |
2. Imagine you are the assistant manager of a fast food store. Part of your job is to report which special is selling best to the store manager at the end of each day. Use your knowledge of descriptive statistics and write one paragraph to let the store manager know what happened today. Use the following data.
| Special number | Sold | Cost |
| Huge Burger | 20 | $2.95 |
| Baby Burger | 18 | $1.49 |
| Chicken Littles | 25 | $3.50 |
| Porker Burger | 19 | $2.95 |
| Yummy Burger | 17 | $1.99 |
| Coney Dog | 20 | $1.99 |
| Total specials sold | 119 |
3. Suppose you are working with a data set that has some different (much larger or much smaller than the rest of the data) scores. What measure of central tendency (mean, median or mode) would you use and why?
4. During the course of a semester, 10 students in Mr. Smith’s class took three exams. Use Microsoft® Excel® to compute all the descriptive statistics for the following set of three test scores over the course of a semester.Which test had the highest average score? Which test had the smallest amount of variability? How would you interpret the differences between exams, and note the range, means, and standard deviations over time?
| Test 1 | Test 2 | Test 3 |
| 90 | 94 | 95 |
| 65 | 75 | 90 |
| 51 | 77 | 91 |
| 88 | 84 | 93 |
| 72 | 88 | 92 |
| 75 | 84 | 90 |
| 60 | 75 | 83 |
| 78 | 85 | 90 |
| 80 | 80 | 92 |
| 84 | 88 | 94 |
5. For each of the following, indicate whether you would use a pie, line, or bar chart, and why:
a. The proportion of freshmen, sophomores, juniors, and seniors in a particular university
b. Change in GPA over four semesters
c. Number of applicants for four different jobs
d. Reaction time to different stimuli
e. Number of scores in each of 10 categories
6. Using the data from question 1, create a frequency table and a histogram in Microsoft® Excel®.
Part B
Answer the questions below. Be specific and provide examples when relevant.
Cite any sources consistent with APA guidelines.
| Question | Answer |
| What are statistics and how are they used in the behavioral sciences? Your answer should be 100 to 175 words. | |
| Providing examples of each, compare and contrast the four levels of measurement. Your answer should be 175 to 350 words. | |
| Differentiate between descriptive and inferential statistics. What information do they provide? What are their similarities and differences? Your answer should be 175 to 350 words. |
Copyright © XXXX by University of Phoenix. All rights reserved.
Copyright © 2018 by University of Phoenix. All rights reserved.
| TitleABC/123 Version X | 1 |
| Descriptive and Inferential Statistics WorksheetPSYCH/625 Version 5 | 2 |
University of Phoenix Material
Descriptive and Inferential Statistics Worksheet
Complete both Part A and Part B below.
Part A
Before completing the following questions, be sure to have read Appendix C and the Statistical Software Resources at the ends of Chapters 2 and 3 from Statistics Plain and Simple.
Highlight the required answers to the question in your Excel output.
1. Using Microsoft® Excel®, enter the following data from the 40 participants by first creating a variable labeled “Score”. Next, compute the mean, median, and mode for the following set of 40 reading scores:
SUMMARY
| 31 | 32 | 43 | 42 |
| 24 | 34 | 25 | 44 |
| 23 | 43 | 24 | 36 |
| 25 | 41 | 23 | 28 |
| 14 | 21 | 24 | 17 |
| 25 | 23 | 44 | 21 |
| 13 | 26 | 23 | 32 |
| 12 | 26 | 14 | 42 |
| 14 | 31 | 52 | 12 |
| 23 | 42 | 32 | 34 |
NO RESPONSE
2. Imagine you are the assistant manager of a fast food store. Part of your job is to report which special is selling best to the store manager at the end of each day. Use your knowledge of descriptive statistics and write one paragraph to let the store manager know what happened today. Use the following data.
| Special number | Sold | Cost |
| Huge Burger | 20 | $2.95 |
| Baby Burger | 18 | $1.49 |
| Chicken Littles | 25 | $3.50 |
| Porker Burger | 19 | $2.95 |
| Yummy Burger | 17 | $1.99 |
| Coney Dog | 20 | $1.99 |
| Total specials sold | 119 |
3. Suppose you are working with a data set that has some different (much larger or much smaller than the rest of the data) scores. What measure of central tendency (mean, median or mode) would you use and why? NO RESPONSE
4. During the course of a semester, 10 students in Mr. Smith’s class took three exams. Use Microsoft® Excel® to compute all the descriptive statistics for the following set of three test scores over the course of a semester.Which test had the highest average score? Which test had the smallest amount of variability? How would you interpret the differences between exams, and note the range, means, and standard deviations over time? NO RESPONSE
| Test 1 | Test 2 | Test 3 |
| 90 | 94 | 95 |
| 65 | 75 | 90 |
| 51 | 77 | 91 |
| 88 | 84 | 93 |
| 72 | 88 | 92 |
| 75 | 84 | 90 |
| 60 | 75 | 83 |
| 78 | 85 | 90 |
| 80 | 80 | 92 |
| 84 | 88 | 94 |
5. For each of the following, indicate whether you would use a pie, line, or bar chart, and why:
a. The proportion of freshmen, sophomores, juniors, and seniors in a particular university
b. Change in GPA over four semesters
c. Number of applicants for four different jobs
d. Reaction time to different stimuli
e. Number of scores in each of 10 categories NO RESPONSES
6. Using the data from question 1, create a frequency table and a histogram in Microsoft® Excel®.
| Range | Frequency | Percentage |
| 10 to 20 | 7 | 17.50% |
| 21 to 30 | 16 | 40.00% |
| 31 to 40 | 8 | 20.00% |
| 41 to 50 | 8 | 20.00% |
| 51 to 60 | 1 | 2.50% |
Part B
Answer the questions below. Be specific and provide examples when relevant.
Cite any sources consistent with APA guidelines.
| Question | Answer |
| What are statistics and how are they used in the behavioral sciences? Your answer should be 100 to 175 words. | NO RESPONSE |
| Providing examples of each, compare and contrast the four levels of measurement. Your answer should be 175 to 350 words. | NO RESPONSE |
| Differentiate between descriptive and inferential statistics. What information do they provide? What are their similarities and differences? Your answer should be 175 to 350 words. | NO RESPONES |
HistogramFrequency 10 to 20 21 to 30 31 to 40 41 to 50 51 to 60 7.0 16.0 8.0 8.0 1.0
Range
Frequency
Copyright © XXXX by University of Phoenix. All rights reserved.
Copyright © 2018 by University of Phoenix. All rights reserved.
