A teacher in a small secondary school wanted to find out whether there was any truth in her idea
that students who used a computer regularly for their homework achieved higher exam grades
than those who did not.
She decided to interview a sample of 30 students taken from across the school.She tape-recorded
all the interviews,with the student ’s permission.She later obtained their end of year exam grades
from their reports.
After interviewing the students she observed the following trends:
[1] On average,Years 7 and 8 spent longer on the computer each week than older students (but
this included time spent playing games).
[2] There did not seem to be any relationship between the use of a computer and grades.