Question: An equation's root mean squared error is: Question 19 options: 1) a measure of how closely its predictions match actual outcomes. 2) a measure of

An equation's root mean squared error is: Question 19 options: 1) a measure of how closely its predictions match actual outcomes. 2) a measure of how closely the equation explains past data. 3) inversely proportional to the difference between the actual value and the predicted value. 4) derived from the R2 statistic. 5) equal to the square root of the sum of squared errors

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