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Chapter 1: Q. 52. (page 48)

Easy reading? Refer to Exercise 46. Describe the shape of the distribution.

Short Answer

Expert verified

Roughly symmetric

Single peak

No gaps

Step by step solution

01

Step 1. Given information

Here are data on the lengths of the first 25 words from Toni Morrison’s Song of Solomon:

02

 Step 2. make a number line for each piece of data Put a dot on the number line above the corresponding number.

03

 Step 3. The shape of the distribution.  

The peak in the dotplot is roughly in the middle of the graph, indicating that the distribution is roughly symmetric.

We notice that the distribution has a single peak at 7, and there appear to be no (large) gaps in the dotplot.

Roughly symmetric

Single peak

No gaps

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Most popular questions from this chapter

Fuel efficiency Refer to Exercise 48. Describe the distribution.

Facebook and age Refer to the preceding exercise.

Part (a). Find the distribution of Facebook use for each of the three age groups. Make a segmented bar graph to compare these distributions.

Part (b). Describe what the graph in part (a) reveals about the association between age and Facebook use.

Social mediaThe Pew Research Center surveyed a random sample of U.S. teens and adults about their use of social media. The following pictograph displays some results. Explain how this graph is misleading.

Returns on common stocks The return on a stock is the change in its market price plus Page Number: 51 any dividend payments made. Return is usually expressed as a percent of the beginning price. The figure shows a histogram of the distribution of monthly returns for the U.S. stock market over a 273-month period.

Part (a). Describe the overall shape of the distribution of monthly returns.

Part (b). What is the approximate center of this distribution?

Part (c). Explain why you cannot find the exact value for the minimum return. Between what two values does it lie?

Part (d). A return less than 0 means that stocks lost value in that month. About what percent of all months had returns less than 0?

Paying for championships Refer to Exercise 73. Here is a better graph of the 2008 salary distributions for the Yankees and the Phillies. Write a few sentences comparing these two distributions.
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