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Class 11 Economics (Statistics For Economics) Chapter 7 Correlation Quiz 3 (25 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Describe the correlation: "The outside temperature and the number of people in attendance at the beach."

Correct Answer: A) Positive.

2. Which of these scenarios does not imply causation?

Correct Answer: A) The more the rooster crows, the more often it rains.

3. An investigation was done to see if keeping the lights on for different amount of time each day affected the number of eggs the chicken lay.What is the DEPENDENT VARIABLE?

Correct Answer: A) The number of eggs the chicken will lay.

4. Identify the explanatory variable:Age of students and whether they are allowed to stay up past 11:00PM on a school night.

Correct Answer: A) Age of Students.

5. Which one of these examples is NOT an example of CAUSATION?

Correct Answer: C) Umbrellas cause rainstorms.

6. What does it mean when we say 'correlation does not mean causation'?

Correct Answer: C) A strong correlation sometimes implies a cause-and-effect relationship.

7. What can we determine about the relationship between two variables from the correlation coefficient?

Correct Answer: C) Strength + Direction.

8. Which of these correlations represent causation?

Correct Answer: B) As the number of weddings increases, the number of marriage licenses increases.

9. Temperature and number of people wearing jackets

Correct Answer: B) Negative Correlation.

10. What are the variables in a correlation called?

Correct Answer: D) Co-variables.

11. What does a correlation coefficient of 0 represent?

Correct Answer: C) No correlation.

12. What is validity?

Correct Answer: B) The accuracy of a given result in measuring what it is designed to measure.

13. What is negative correlation?

Correct Answer: D) Two variables change in different directions.

14. R=0.3

Correct Answer: B) Weak positive.

15. Attendance & college GPA's have a correlation coefficient of-0.89 ..... this indicates a ..... correlation.

Correct Answer: C) Strong negative.

16. If a scatterplot has no association then .....

Correct Answer: C) Its ordered pairs have no predictable pattern.

17. Which of the following is the WEAKEST negative correlation?

Correct Answer: B) -.34.

18. Determine whether the following scenario should use a one-way ANOVA test or two-way ANOVA test:A researcher want to determine whether there is an interaction between physical activity level and gender on blood cholesterol concentration in children.

Correct Answer: B) Two-way ANOVA test.

19. Average time spent listening to music per day and average time spent watching TV per day. $r=-.17$

Correct Answer: D) Weak negative.

20. Which type of correlation most likely represents the relationship between number of hours studied for an exam and the grade on the exam?

Correct Answer: A) Positive Correlation.

21. A perfect positive correlation has a correlation coefficient of .....

Correct Answer: A) 1.

22. Which of the following represents the STRONGEST correlation?

Correct Answer: D) -.79.

23. What would be the correlation be between study time and test grades?

Correct Answer: A) Positive Correlation.

24. DESCRIBE THE LIKELY CORRELATION BETWEEN NUMBER OF TIMES BRUSHING AND LOSSSING ANDNUMBER OF TRIPS OF THE DENTIST

Correct Answer: B) NEGATIVE.

25. A researcher finds a correlation coefficient of +2.00 between cigarette smoking and lung cancer. This correlation coefficient indicates a(n) .....

Correct Answer: D) Error in computation.

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