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Q. Index nos. show changes rather than absolute amounts of change.

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

Q. The measure of dispersion which uses only two observations is called:

Q. __________ is a point of reference in comparing various data describing individual behavior.

Q. The percent of total variation of the dependent variable Y explained by the set of independent variables X is measured by

Q. If the sum of squares of the rank differences of 10 pairs of values is 30, find the correlation coefficient between them.

Q. The additive and multiplicative time series models are:

Q. The sum of squared deviations is minimum when taken from:

Q. In a moderately skewed distribution, the following equation indicates the relationship among mean, median and mode:

Q. The smaller the variance the less spread of the data around the mean