If the coefficient of correlation between two variables is 0.7 then the percentage of variation unaccounted for is
  • a)
    70%
  • b)
    30%
  • c)
    51%
  • d)
    49%
Correct answer is option 'C'. Can you explain this answer?

CA Foundation Question

Nouman Shabbir
Jan 30, 2019
Square of 0.7 is 0.49 (49%)
100%-49% = 51%

Kavita Yadav
Oct 26, 2019
R=0.7
r^=?
then
0.7×0.7=0.49
0.49×100=49%
49%is accounted
so 100%-49%=51%

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