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Table 1 Calculation of correlation coefficient

From: The correlation coefficient: Its values range between +1/−1, or do they?

Obs X Y zX zY zX × zY
1 12 77 −1.14 −0.96 1.11
2 15 98 −0.62 1.07 −0.66
3 17 75 −0.27 −1.16 0.32
4 23 93 0.76 0.58 0.44
5 26 92 1.28 0.48 0.62
Mean 18.6 87.0 Sum=1.83
s.d. 5.77 10.32    
  n=5   r=0.46