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Q. If r = ± 1, the two regression lines are...............................

Q. A data set may have no mode, one mode, or multiple modes.

Q. The sample mean is a

Q. In regression analysis, if the independent variable is measured in kilograms, the dependent variable:

Q. The rank correlation coefficient of a debating contest involving 10 participants was calculated as 0.6. However, it was later discovered that the difference in the ranks of some participants was read as 8 instead of 3. Find the correct correlation coefficient:

Q. Half of the difference between upper and lower quartiles is called:

Q. Index number calculated by Fisher's formula is ideal because it satisfy:

Q. The degree of peaked ness or flatness of a unimodal distribution is called:

Q. Weighted G.M. of relative formula satisfy test

Q. Given Mean = 70.2 and mode = 70.5. Find the median using empirical relationship among them.