SATcoaching: Randomized experiments on SAT coaching

In clubSandwich: Cluster-Robust (Sandwich) Variance Estimators with Small-Sample Corrections

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.