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Q. The coefficient of correlation between the regression coefficients is:

Q. The sum of the squares of the deviations of the variable is when taken about arithmetic mean

Q. In a bivariate sample, the sum of squares of differences between marks of observed values of two variables is 33 and the rank correlation between them is 0.8. Find the number of pairs of observations:

Q. P01 is the index for time

Q. The component of time series useful for long term forecasting is

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

Q. If there is a very strong correlation between two variables then the correlation coefficient must be:

Q. In quality control of manufactured items, the most common measure of dispersion is:

Q. Standard deviation is always computed from

Q. If all the points of a scatter diagram lie on a straight line falling from left upper corner to the right bottom corner, the correlation is called...................