2. Describing Data with Tables and Graphs

Given the following frequency distribution for exam scores: $50-59$: $3$ students, $60-69$: $5$ students, $70-79$: $8$ students, $80-89$: $4$ students, which of the following represents the correct cumulative frequency for the class interval $70-79$?

Which of the following best describes the difference between $relative frequency$ and $cumulative frequency$ in a frequency distribution?

Why is it generally recommended that the number of classes in a frequency distribution be between $5$ and $20$?

In a relative frequency distribution, what does each $f/n$ (relative frequency) represent?

Use the frequency distribution below to find the class width and class midpoints.

The following data set shows the number of overtime hours that 12 employees worked in a month. Construct a frequency distribution, using a lower class limit of 3 and a class width of 4.