91Ó°ÊÓ

Use the specified grouping method to

Part (a): Determine a frequency distribution.

Part (b): Obtain a relative frequency distribution.

Part (c): Construct a frequency histogram based on your result from part (a).

Part (d): Construct a relative frequency histogram based on your result from part (b).

From the TVbytheNumbers website, we obtain the viewing audiences, in millions, for the top 20 primetime broadcast TV shows for the week ending August 18,2013. Use cutpoint grouping with a first class of 4-under 5.

What is the relationship between a frequency or relative frequency distribution of a quantitative data set and that of a qualitative data set?

A quantitative data set has been grouped by using limit grouping with equal-width classes. The lower and upper limits of the first class are $3$and $8$, respectively, and the class width is $6$.

a. What is the class mark of the second class?

b. What are the lower and upper limits of the third class?

c. Which class would contain an observation of $23$?