Calculate Pearson’s coefficient of correlation from the following
taking 100 and 50 as the assumed average of X and Y respectively.
X 104 111 104 114 118 117 105 108 106 100 104 105
Y 57 55 47 45 45 50 64 63 66 62 69 61
(b) Calculate multiple correlation coefficients R1.23 and R2.13 from the following
information: r13= 0.64, r23 0.79 and r12 0.80
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