SATcoaching: Randomized experiments on SAT coaching

SATcoachingR Documentation

Randomized experiments on SAT coaching

Description

Effect sizes from studies on the effects of SAT coaching, reported in Kalaian and Raudenbush (1996)

Usage

SATcoaching

Format

A data frame with 67 rows and 11 variables:

study

Study identifier

year

Year of publication

test

Character string indicating whether effect size corresponds to outcome on verbal (SATV) or math (SATM) test

d

Effect size estimate (Standardized mean difference)

V

Variance of effect size estimate

nT

Sample size in treatment condition

nC

Sample size in control condition

study_type

Character string indicating whether study design used a matched, non-equivalent, or randomized control group

hrs

Hours of coaching

ETS

Indicator variable for Educational Testing Service

homework

Indicator variable for homework

References

Kalaian, H. A. & Raudenbush, S. W. (1996). A multivariate mixed linear model for meta-analysis. Psychological Methods, 1(3), 227-235. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1037/1082-989X.1.3.227")}


clubSandwich documentation built on July 26, 2023, 5:46 p.m.