The mean and variance of 7 observations are 8 and 16, respectively. If five of the observations are 2, 4, 10, 12, and 14, then the absolute difference of the remaining two observations is:

In a moderately skewed distribution, if Mean = 12 and Median = 8, then using Empirical relation (Mode = 3 Median - 2 Mean), what is the value of Mode?

If 4y - 5x = 15 is the regression line of y on x and the coefficient of correlation between x and y is 0.75, what is the value of the regression coefficient of x on y (bxy)?