1.

From the data given below, find the no of items (N) : ∑xy=120, r = 0.5, standard deviation of Y = 8, ∑x2=90, where x and y are deviations from arithmetic mean.

Answer»

From the data given below, find the no of items (N) :

xy=120, r = 0.5, standard deviation of Y = 8, x2=90, where x and y are deviations from arithmetic mean.



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