Professor Sands studies the relationship between the number of minutes that an adolescent spends text messaging each semester and his/her grades in school.She found a correlation of +.60.What can we conclude from this report?
A)Text messaging results in lower grades for adolescents.
B)Text messaging has no effect on grades for adolescents.
C)Text messaging and academic grades are related in adolescents.
D)The more an adolescent text messages,the higher his or her grades.

Question

Quizplus · Accepted Answer

The correlation coefficient shows a positive relationship between the amount of text messaging and academic grades. However, correlation does not imply causation, so we cannot conclude that text messaging causes lower or higher grades. It could be that students who already struggle academically tend to text message more, or that high achievers are able to balance text messaging with their school work.

Professor Sands Studies the Relationship Between the Number of Minutes