For Three Weeks Mr $\times$ 1 $\times$ 3 Factorial
D) Multiple Single-Subject Design

Multiple Choice

For three weeks Mr.Gomez recorded the amount of homework his fourth grade students turned in.The next three weeks he rewarded those who turned in homework with free playtime and recorded the turn-in rate for these three weeks.Mr.Gomez is using which design?

A) Counterbalanced
B) One-group time series
C) 3 $\times$ 1 $\times$ 3 factorial
D) Multiple single-subject design