Concept explainers
a.
To construct: A multiple regression model for predicting the relationship between the reading ability and estimated scores for both boys and girls.
To find: Whether the relationship between reading ability and estimated scores is same for both boys and girls.
b.
To construct: A multiple regression model for predicting IQ using the explanatory variables LSS, READ, and EST.
To conclude: Whether the model gives a better fit.
c.
To check: Whether the residual plot satisfies the necessary conditions of a model.
d.
To construct: A multiple regression model with the interaction between READ and EST.
To check: Whether the results are surprising.
To explain: The changes happened in individual t statistic of the variables READ and EST.
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BASIC PRACTICE OF STATS-LL W/SAPLINGPLU
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