Question

You have been asked to do a survey of student satisfaction with MyMathLab courses at South University. Describe how you would obtain a sample of these types: stratified and simple random

Answer 1

Simple random = just pick students by chance who have taken the course.

Stratified = pick students by chance for each grade level achieved in the course.

Answer 2

Using a Histogram chart, the frequency is 0-24, the Prealgebra Exam Scores are


Scores frequencies

70.5
75.5 17

75.5
80.5 3

80.5
85.5 2

85.5
90.5 4

90.5
95.5 16

95.5
100.5 6


Find the upper class limit of the fifth class.