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For the frequency distribution of X number of grammatical mistakes per line is as follows.
X: 0 ...
For an experiment we have the following data set: n = 4, ∑ X = a,∑ Y = 10,∑ XY = 21,∑ X2 = 30,∑ Y2 = 30 the correlati...
Two random variables X and Y are said to be independent if:
For the recorded observation, the coefficient of variation is 0.2 and the variance is 16. The arithmetic mean is:
For the given figures of production of a sugar factory, the estimate of the production for 1976 using straight line trend with origin at the year 1972 b...
For making frequency distribution, the number of classes used depends upon:
The square of normal variate with mean 0 and variance 1 follows: