Students in a large accounting class were asked to rate the course by assigning a score of 1, 2, 3, 4, or 5 to the course. A higher score indicates that the students received greater value from the course. The accompanying table shows proportions of students rating the course in each category.

Find the mean and standard deviation of the ratings.

Transcribed Image Text:

Rating Proportion 0.19 028 0.30 0.16