No. of pairs of observations In X and Y series = 8
X series Arithmetic average = 74.5
X series assumed average =69
X series standard deviation =13.07
Y series arithmetic average = 125.5
Y series assumed average = 112
Y series standard deviation= 15.85
Summating of products of corresponding deviations of X and Y series = 2176
Calculate coefficient of correlation.
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Answer:
Take deviations of X series from its ASSUMED ... Mean = 69 Mean = 112. X dx = (X- dx² Y dy = (y- dy² dxdy 69) 112) 78 +9 81 125 +13 ... No of pairs of observations of X and Y series = 8
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Answer:
substitute the values in the formula
Ans is 0.955
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