WWGbook (version 1.0.0)

classroom: classroom data in Chapter 4

Description

The Study of Instructional Improvement (SII; Hill, Rowan, and Ball, 2004) was carried out by researchers at the University of Michigan to study the math achievement scores of first- and third-grade students in randomly selected classrooms from a national U.S. sample of elementary schools.

Usage

data(classroom)

References

Hill, H.C., Rowan, B., and Ball, D.L. (In Press). Effect of Teacher's Mathematical Knowledge for Teaching on Student Achievement, American Educational Research Journal, Learning Mathematics for Teaching (LMT) Project. West, B., Welch, K. & Galecki, A, Linear Mixed Models: A Practical Guide Using Statistical Software, Chapman Hall / CRC Press, first edition, 2006.

Examples

attach(classroom)

#### Boxplots for Figure 4.2
classroom.first8 <- classroom[classroom$schoolid <= 8,]
par(mfrow=c(4,2))
for (i in 1:8) 
{boxplot(classroom.first8$mathgain[classroom.first8$schoolid==i] ~ classroom.first8$classid[classroom.first8$schoolid==i],ylab="Mathgain", xlab="classid" )}