step_lm: Select predictor games by step regression

In Blockhead-yj/report.iqz: Make Potential Predction Report of IQUIZOO

Select predictor games by step regression

Description

Usually users will have lots of iquizoo games test at once, however it is bad idea to put all the games into a model to predict academic score, which might cause the problem of overfitting or a decline of adjust r squared. So we choose a subset of iquizoo games to be placed into the model by step regression.

Usage

step_lm(data_wider, formula, n_tasks = 5, trace = FALSE, ...)

Arguments

data_wider	Data.frame, which each row contains all the observations of a single person
formula	Formula, indicate which variables should be included in model
n_tasks,	Numerical, the least number of tasks that a step method should be used
...	Other arguments used in stats::step function

Value

A lm object

Blockhead-yj/report.iqz documentation built on March 18, 2022, 5:30 a.m.