A Study Reported Data on Y-Tensile Strength (MPa)$x _ { 1 }$

Question

Examlex · Accepted Answer

The Answer is At step #1 (in which the model with all 4 predictors was fit), t=.83 was the t ratio smallest in absolute magnitude. The corresponding predictor

x _ { 3 }

was then dropped from the model, and a model with predictors

x _ { 1 } , x _ { 2 } ext { and } x _ { 4 }

was fit. The t ratio for

x _ { 4 }

, -1.53, was the smallest in absolute magnitude and 1.53<2.00, so the predictor

x _ { 4 }

was deleted. When the model with predictors

x _ { 1 } ext { and } x _ { 2 }

only was fit, both t ratios considerably exceeded 2 in absolute value, so no further deletion is necessary.

A Study Reported Data on Y-Tensile Strength (MPa) $x _ { 1 }$

Definitions:

A Study Reported Data on Y-Tensile Strength (MPa) x1x _ { 1 }x1​

Definitions:

A Study Reported Data on Y-Tensile Strength (MPa) $x _ { 1 }$