I wonder what "explained" means.
If "explained" means the right thing, the correlation is .74
If "explained" means the right thing, the correlation is .74
Explained variation in this case is the variation in Y values that is explained by X values; unexplained variation is variation in Y values that cannot be explained by X values. Total variation is explained values plus unexplained values.
I hope this will help.
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In this case, it is mentioned that the number of days missed explains 74% of the variation in salary increases. So, the correlation between the number of days missed and salary increase is the square root of the coefficient of determination.
To find the correlation, compute the square root of 0.74:
correlation = sqrt(0.74) = 0.86
Therefore, the correlation between the number of days missed and salary increase is 0.86.