Business-Statistics-and-Research-Methods Objective Questions and Answers

848. Questionnaire is a:

849. Which statistical test should be applied to test the effectiveness of 'special coaching' on the marks scored by the students?

A. Paired f test

850. The middle value of an ordered array of numbers is the

851. Assertion (A): If regression coefficient of X on Y is greater than one, regression coefficient of Y on X must be less than one.
Reason (R): The geometric mean between two regression coefficients is the coefficient of correlation.

A. Both (A) and (R) are true

B. (A) is true, but (R) is false

C. (A) is false, but (R) is true

D. Both (A) and (R) are false

Discussion

852. The p.d.f of Poisson Distribution is given by

A. $$\frac{{{e^{ - m}}{m^z}}}{{x!}}$$

B. $$\frac{{{e^{ - m}}x!}}{{{m^z}}}$$

C. $$\frac{{x!}}{{{m^z} - {e^{ - m}}}}$$

D. $$\frac{{{e^m}{m^z}}}{{z!}}$$

Discussion

853. . . . . . . . . is particularly useful when we have to compute the mean of means.

A. Arithmetic mean

B. Geometric mean

C. Weighted arithmetic mean

D. None of the above

Discussion

854. Z-list is used to know whether two population means are

Business-Statistics-and-Research-Methods MCQs