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Q. is data that is collected by a researcher from first-hand sources

Q. Wheat crops badly damaged on account of rains is:

Q. If mean absolute deviation of set of observations is 8.5 then value of quartile deviation is

Q. Find the mode of the set (8, 5, 7, 10, 15, 21, 5, 7, 2, 5)

Q. In a regression analysis if r2 = 1, then :

Q. A coefficient of correlation is computed to be -0.95 means that

Q. For a distribution of data, if the arithmetic mean> median>mode, then which of the following is true?

Q. If r is the simple correlation coefficient, the quantity ?2 is known as ...................

Q. Factor Reversal test is satisfied by:

Q. Relationship between correlation coefficient and coefficient of determination is that