A psychologist is interested in how well people can remember words that they had previously seen.He gives them a list of 70 words,but does not tell them they will be tested later.One week later the students are given a list of 140 words,and told to choose the ones they had seen the previous week.Below is the grouped distribution of the number of words remembered by the subjects.
What is the score at the 90th percentile?

Question

Quizplus · Accepted Answer

The 90th percentile is the value below which 90% of the observations fall. In this context, the score at the 90th percentile is 47, as it is the value that separates the top 10% of scores from the rest.

A Psychologist Is Interested in How Well People Can Remember