The correlation coefficient between two variables x and y is

Related MCQs

• If the two regression coefficients are byx = - 0.4 and bxy = - 0.9 then the value of correlation coefficient (r) is
• The value of the correlation coefficient lies between
• If 𝝈𝒙 ൌ 𝟏𝟎, 𝝈𝒚 ൌ 𝟏𝟐, and bxy = - 0.8, then the value of correlation coefficient (r) is
• When Var (x) = 2.25, Var (y) = 1 and Cov (x, y) = 0.9, then correlation coefficient is
• If the relation between two variables x and y be 5x + 7y = 28 and median of y be 3, then the median of x is
• Two variables x and y are given by the relation y = 3x – 2. If the mode of x be 5, the mode of y will be
• The 1st and 3rd quartiles of a frequency distribution are respectively 25 and 45. If the coefficient of skewness be – 0.1, then the median is
• If A.M and the coefficient of variation of x are 6 and 50% respectively, then the variable of x is
• The coefficient of skewness of a distribution is 0.4. Its S.D and mean are respectively 8 and 30. The mode of the distribution is
• For a frequency distribution coefficient of skewness = 0.6; mean = 172 and mode = 163. The value of the variance is