In a study of employees at a large corporation, researchers found that workers who regularly worked over 40 hours a week had to go to the doctor more often than those who worked 40 or less hours per week. 5. Does the study indicate just a correlation or causation? 6. Identify the explanatory variable. 7. Identify the response variable. College Readiness Mathematics B Choices for 5-7: A) Correlation C) The employees E) The corporation Week 13 B) Causation D) Working more or less than 40 hours a week AB) Number of doctor visits Page 10 of 15

Suppose you have collected data on 1000 customers who visited your company's website last week. For each customer, the time spent on the page and the total amount of customer purchases during the visit were recorded. You want to explore the relationship between these two variables. What is the explanatory variable and what is the response variable? to. Explanatory: Time spent on the page Answer: Total amount of purchases b. It is not possible since neither explains c. Answer: Time spent on the page Explanatory: Total amount of purchases

11. A manager of a department times how many hours each person works within her department.   43     42     24     50     41     28     47     47     39     59     29     31     39     42   What is the mean and median of the data? Group of answer choices Mean = 40.1;  Median = 41.5 Mean = 40.0;  Median = 42.5 Mean = 40;     Median = 42 Mean = 40.8;  Median = 47

Select the most appropriate response. A university statistician found that the correlation between college GPA and starting salary was 0.12.  Based on this you would tell the university that:   a) GPA is a good predictor of starting salary. b) students with low GPA’s will have the lowest starting salaries. c) GPA is a poor predictor of starting salary. d) students with high GPA’s will have the highest starting salaries

4. time to try out multiple predictor variables. take a look at the data shown here, where the outcome is becoming a great chef. we suspect that variables such as number of years of experience cooking, level of formal culinary education, and number of different positions (sous chef, pasta station, etc.) all contribute to rankings or scores on the great chef test. a. which are the best predictors of a chef’s score? b. what score can you expect from a person with 12 years of experience and a level 2 education who has held five positions?

Provide an appropriate response. Suppose you were to collect data for the pair of given variables in order to make a scatterplot. For the variables time spent on homework and exam grade, which is more naturally the response variable and which is the explanatory variable? O Time spent on homework: response variable Exam grade: explanatory variable O Time spent on homework: explanatory variable Exam grade: response variable

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1. Interpret the following graph. The variables of interest are narcissism (on a 1-5 scale), and random assignment to read a code of ethics or inoculation condition. The dependent variable is how ethical someone was in the past week, averaged into a 1-5 scale. Honest over the past week 5 4.5 4 3.5 Low Narcissism High Narcissism Code of Ethics Inoculation

Can I get some help with identifying the variables and individuals?

Can you identify the explanatory variable and the response? Let me know which response is correct.