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Chapter 2: Q5 (page 55)

Interpreting a Histogram. In Exercises 5鈥�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 鈥淐oin Weights鈥� in Appendix B. (Grams are actually units of mass and the values shown on the horizontal scale are rounded.)

Sample Size What is the approximate number of quarters depicted in the three bars farthest to the left?

Short Answer

Expert verified

The approximate number of quarters plotted on the farthest left portion of the histogram is equal to 40.

Step by step solution

01

Given information

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

02

Interpret the three leftmost bars in the histogram

The farthest left portion of the histogram has three vertical bars corresponding to the weights between 5.5 grams to 5.8 grams.

The length of the vertical bar depicts the number of quarters for the corresponding range of weights on the horizontal axis.

The length of the first bar is approximately equal to 12 quarters.

The length of the second bar is approximately equal to 20 quarters.

The length of the third bar is approximately equal to 8 quarters.

Therefore, the total length is equal to:

12+20+8=40

Thus, the total number of quarters represented by the leftmost portion of the histogram is approximately equal to 40.

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Most popular questions from this chapter

Interpreting a Histogram. In Exercises 5鈥�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 鈥淐oin Weights鈥� 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.

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71.6 69.9 70.8 71.5 72.0 71.4 73.8 74.2 73.2 72.3 73.7 76.3 76.6 75.5 76.6 77.0 76.9 77.8 77.1 77.0 77.4 77.0

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125 203 205 221 225 229 233 233 235 236 236 237 238 238 239 240 240 240 240 241 241 242 242 242 243 243 244 245 245 245 245 246 246 248 248 248 249 249 250 251 252 253 253 255 255 256 257 258 262 264
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