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Questions › IIT JAM › IIT JAM 2024 › Q53
2 marksEconometrics › Goodness of fit and model selection › R-squared and the coefficient of determinationModerateabout 2 min

IIT JAM 2024 Question 53: Goodness of fit and model selection

A regression equation Y=−2.5+2XY = -2.5 + 2XY=−2.5+2X is estimated using Y=2,5,9,14Y = 2, 5, 9, 14Y=2,5,9,14 and X=2,4,6,8X = 2, 4, 6, 8X=2,4,6,8. The coefficient of determination is ________ (rounded off to two decimal places).

Answer and worked solution

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Plain-text version

A regression equation Y = -2.5 + 2X is estimated using Y = 2, 5, 9, 14 and X = 2, 4, 6, 8. The coefficient of determination is (rounded off to two decimal places).

Goodness of fit and model selection has come up 27 times in 6 exams since 2009.

What this question tests

This question is on R-squared and the coefficient of determination, part of Goodness of fit and model selection in Econometrics.

The share of variation in the dependent variable that the regression explains.

TestStop has 15 past-paper questions on this subtopic; the nearest in year are below.

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