# Question

A quantitative data set has been grouped by using cutpoint grouping with equal-width classes.

a. If the lower and upper cutpoints of the first class are 5 and 15, respectively, what is the common class width?

b. What is the midpoint of the second class?

c. What are the lower and upper cutpoints of the third class?

d. Which class would contain an observation of 32.4?

a. If the lower and upper cutpoints of the first class are 5 and 15, respectively, what is the common class width?

b. What is the midpoint of the second class?

c. What are the lower and upper cutpoints of the third class?

d. Which class would contain an observation of 32.4?

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