Business Statistics And Research Methods - Study Mode
[#561] Regression coefficient of x on y will be:
Correct Answer
(D) $$rfrac{{sigma x}}{{sigma y}}$$
[#562] The formula to find the mid point of a class is
Correct Answer
(C) $$frac{{{L_1} + {L_2}}}{2}$$
[#563] How will the arithmetic mean be affected by adding a constant 'b' to every item?
Correct Answer
(A) $$overline X + b$$
[#564] When the population mean is either lower or higher than some hypothesised value . . . . . . . . Is considered to be appropriate.
Correct Answer
(A) one tailed test
[#565] If the Karl Pearson coefficient of correlation between x and y is 0.3, then the coefficient of correlation between -x and 2y is
Correct Answer
(C) 0.3