A study that compared novice drivers and experienced drivers with respect to the relative number of driving errors they made while using a cell phone or not using a cell phone resulted in the same amount of deterioration in both groups.
This type of design
a. is appropriate for analysis with a t test.
b. involved two manipulated variables.
c. used a nonequivalent groups design.
d. used a reduced factorial design.
Question 2
The state of Vermont tried to anticipate the degree to which middle- and high-school students contemplated suicide. The state collected data from students in 1993, 1995, and 1997 . This approach reflects
a. a cohort study.
b. a trend study.
c. a cross-sectional study.
d. a retrospective study.
Types of variation in chromosome number.
ESM Study of Time Spent with Family
Cultural Variations in the Strange Situation Across cultures, most toddlers exhibit secure attachme
How to Study Physics
What would your average (mean) number of cells per cluster be?
Number line (5 - 1)