Question

Question 26 O pts BONUS: A researcher calculated the correlation coefficient between hours studied and test grades as r = 0.60. If she then decided to transform the variable hours studied to minutes studied what would happen to the correlation coefficient? (1 point) Explain your response. (1 point) HTML Editor B U А Tx E Ex? 用 2 x C TTT 12pt Paragraph O words

Answer 1

The Correlation coefficient is a unitless measure .

the above formula is Correlation coefficient formula .

Γ = n(Σχy) - (Σx)(Σy) ν[nΣx2 - (Σx)2][nΣy? - (Σy)2]

If the correlation coefficient is calculated when then values in hours are changed to values in minutes , each and every value needs to be divided by 60 , in order to convert then in minutes .

If we look at the formula closely , we can see if the values get divided by 60 In numerator and denominator , eventually that 60 gets cancelled out while calculation . And the result remain unchanged .