Name: __________________________________
Undergraduate Marketing Research - Extra Credit Assignment
Worth up to 3 additional points towards final grade
Please open the dataset entitled “Extra Credit Dataset.” Follow the instructions below and answer the
questions to the best of your ability.
For questions 1-3, please run the descriptive statistics for all five variables.
1. What is the average age of respondents in this dataset? ________________________
2. What is the range for “InternetUsage”? _____________________________________
3. What is the variance for “InternetShopping”? ________________________________
For questions 4-7, run an Independent Samples t-test comparing “Gen Y” and “Gen X” on the variables
“InternetUsage” and “InternetShopping.”
4. What is the p-value for the t-test on the variable “InternetUsage” across the two generations (equal
variances assumed)?
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5. “InternetUsage” is a variable that measures how often a respondent uses the Internet. In your own
words, what do the results of the t-test tell you (consider the means for each group)? Be descriptive and
refer to the statistical output. (i.e. t-test, p-value, means).
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6. What is the p-value for the t-test on the variable “InternetShopping” across the two generations (equal
variances assumed)?
________________________________________________
7. “InternetShopping” is a variable that measures how often a respondent shops online. In your own
words, what do the results of the t-test tell you (consider the means for each group)? Be descriptive and
refer to the statistical output. (i.e. t-test, p-value, means).
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8. You want to test if there is there a statistical difference between the average values of “InternetUsage”
and “InternetShopping.” What test would you run?
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9. Run the test you gave as an answer for question #8. Based on the results, is there a significant
difference between the average values of “InternetUsage” and “InternetShopping?” Explain your answer
and refer to statistical output (i.e. t-test, p-value, means).
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10. Currently, the median age in the U.S. is 36.8. What test would you use to determine if the average age
of your sample is statistically different (or not different) from the age of 36.8?
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11. Run the test you gave as an answer for question #10. Is there a statistical difference between your
sample’s average age and the age 36.8? Explain your answer and refer to statistical output (i.e. t-test, pvalue, means).
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12. Ideally, you would like to have a 50/50 split in your sample between men and women. Statistically, do
men and women have an equal chance of being in your sample? Explain your answer and refer to
statistical output. (Note: you may use a binomial test or a one-sample t-test).
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For questions 13-15, run a Cross Tabulation comparing “Gender” to “InternetUsage.”
13. “InternetUsage” was measured on a scale from 1-5. What gender responded “5 – high Internet usage”
the most on this scale? Explain.
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14. What is the p-value of the Chi-square test? ________________________
15. In your own words, what do the results of the Chi-square test tell you? Be descriptive and refer to the
statistical output.
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