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Class 11 Economics (Statistics For Economics) Chapter 7 Correlation Quiz 4 (25 MCQs)

Quiz Instructions

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1. A cell phone company charges $ 60.00 a month for up to 1 gigabyte computations. of data. The cost of additional data is $ 0.05 per megabyte. If d represents the number of additional megabytes used and c represents the total charges at the end of the month, which linear equation can be used to determine a user's monthly bill?
2. R=-0.89
3. The relationship between x, a student's test scores and y, the student's success in school. Based on this information, what could the relationship between the data?
4. A negative correlation exists on a scatterplot when .....
5. If two quantities A and B exhibit a negative correlation, then as quantity A increases, quantity B would (a) .
6. ..... correlation is when there is NO relationship between two sets of data.
7. Determine whether the following scenario should use a one-way ANOVA test or two-way ANOVA test:A group of psychiatric patients are trying three different therapies:counseling, medication and biofeedback. They want to see if one therapy is better than the others.
8. The correlation coefficient shows .....
9. You collect data on the heights and weights (in inches and pounds, respectively) of male elementary school students, and find that the correlation between height and weight is 0.754. After you convert the heights to centimeters and the weights to kilograms, correlation .....
10. Which of the following is not a condition that must be checked before you can use correlation?
11. Describe the correlation: "The day of the month and the wind speed."
12. Temperature of a rubber band and distance the rubber band can stretch. $r=.84$
13. Test scores vs. shoe sizes
14. Correlation or Causation:the speed you drive and the amount of fuel you use?
15. Identify the response variable:Age of students and whether they are allowed to stay up past 11:00PM on a school night.
16. Which phrase best represents the relationship between the duration of airline flight in hours and the number of gallons of jet fuel used?
17. Which type of correlation most likely represents the relationship between distance traveled to school and number of shirts owned?
18. The amount of time since a movie was released and the amount of tickets sold
19. ..... correlation is when one set of data decreases and the other set of data ALSO decreases.
20. A person's height and a person's age up to adulthood
21. What graph best shows correlation?
22. If r is positive, then there is .....
23. Correlation shows .....
24. A correlation value (r) that has a strong, positive linear association would have a value close to
25. Car weight and distance traveled using a full tank of gas. $r=-.86$
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