A box containing 12 balls of color 6 red and 6 white. A ball of white selected ball finds the probability of white________?

Correlation coefficient is ________ of origin and unit of measurement?

G.M. are set of ‘n’ values product of the nth roots of the ________?

Census reports used as a source of data is________?

Paasche’s Index number is ________?

When testing for randomness, we can use________?