Chapter 2: Q6 (page 55)

Interpreting a Histogram. In Exercises 5–8, answer the questions by referring to the following Minitab-generated histogram, which depicts the weights (grams) of all quarters listed in Data Set 29 “Coin Weights” in Appendix B. (Grams are actually units of mass and the values shown on the horizontal scale are rounded.)
Class Width and Class Limits Give the approximate values of the class width, and the lower and upper class limits of the class depicted in the bar farthest to the left.

Expert verified

The approximate value of the class width is equal to 0.1 grams.

The approximate value of the lower class limit is equal to 5.5 grams, and that of the upper class limit is equal to 5.6 grams.

Step by step solution

A histogram is plotted for the weights of a set of quarters.

The leftmost bar of the histogram is plotted between 5.5 grams and 5.6 grams on the horizontal axis.

Thus, the lower class limit corresponding to the leftmost bar is equal to 5.5 grams, while the upper class limit is equal to 5.6 grams.

The width of the class is obtained by computing the difference between the upper and the lower class limits:

$Class width = Upper limit - Lower limit = 5.6 - 5.5 = 0.1$

Thus, the class width corresponding to the leftmost bar is equal to 0.1 grams.

Unlock Step-by-Step Solutions & Ace Your Exams!

Over 30 million students worldwide already upgrade their learning with Vaia!

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Age (yr) of Best Actress When Oscar Was Won	Frequency
20-29	29
30-39	34
40-49	14
50-59	3
60-69	5
70-79	1
80-89	1

Brain Volume	1173	1067	1347	1029	1204
IQ	101	93	94	97	113