Free Correlation and Regression MCQs with Answers
23 Correlation and Regression MCQs from Statistics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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23 questions · page 3 of 3
21. Regression co-efficient is denoted by_____________?
- A. by
- B. byx
- C. bzx
- D. m
Explanation: The regression coefficient of y on x is conventionally written as b_yx, often typed as byx. The subscript indicates that y is being estimated from x.
Correct answer: byx22. The regression co-efficient are _________ origin?
- A. Dependent
- B. Independent
- C. Scale
- D. Both
Explanation: Regression coefficients do not change when the origin of measurement is shifted, although they can change when the scale is changed. Therefore, they are independent of origin.
Correct answer: Independent23. Least square regression line always passes through ____________________?
- A. (x,y)
- B. (X,Y)
- C. (X,Z)
- D. x/y
Explanation: Both least-squares regression lines pass through the point formed by the means of the two variables, written as (X̄, Ȳ). The notation (X,Y) is evidently being used for these mean values.
Correct answer: (X,Y)