Which of the following statements is true about the

For the distribution

X:            1              0              1

The variance of degenerate random variable is:

If the first, second and third moment about origin are 2, 8 and 14. respectively, then Karl Pearson gamma coefficient of skewness y1 is:

The prices (in ₹) of different yarns (per kg) in two consecutive years are as follows.

Using the method of semi-averages, secular trend is measured when:

With which characteristic movement of a time series would you associate increasing demand of smaller automobiles?

For frequency distribution presentation , which option is wrong.