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Chapter 2: Q.15 (page 88)

Draw a smooth curve that represents a symmetric trimodal (three-peak) distribution.

Short Answer

Expert verified

From the given information,

Step by step solution

01

Given Information

It is given in the question, to draw a smooth curve that represents a symmetric trimodal (three-peak) distribution.

02

Step 2: Explanation

There are 3methods in a trimodal distribution.

The property of an asymmetric picture is that one part of the curve is the mirror image of the other.

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Most popular questions from this chapter

Top Broadcast Shows. As reported in Primetime Broadcast Programs, a publication of The Nielsen Company, the top three prime broadcast network television shows for the week of August 5, 2013, are as presented in the following table. Ratings are the percentage of TV homes in the United States tuned into television. Identify the type of data provided by the information in each column of the table

.

Identify an important reason for grouping data.

For instance, consider the grouped days-to-maturity data given in Table 2.10(b) on page 57.

From that table, we see that the cumulative frequency of investments with a maturity period of less than 50day is 4(3+1)and, therefore, the cumulative relative frequency is0.1(4/40).

Table 2.14shows all cumulative information for the days-to-maturity data.

Cumulative information for days-to-maturity data.

a. Round each observation to the nearest year and then construct a stem-and-leaf diagram of the rounded data.

b. Truncate each observation by dropping the decimal part, and then construct a stem-and-leaf diagram of the truncated data.

c. Compare the stem-and-leaf diagrams that you obtained in parts (a) and (b).

This exercise deals with truncated graphs.

a. What is a truncated graph?

b. Give a legitimate motive for truncating the axis of a graph.

c. If you have a legitimate motive for truncating the axis of a graph, how can you correctly obtain that objective without creating the possibility of misinterpretation?

For quantitative data, we examined three types of grouping: single-value grouping, limit grouping, and cut point grouping. For each type of data given, decide which of these three grouping types is usually best, Explain your answers.

a. Continuous data displayed to one or more decimal places

b. Discrete data in which there are relatively few distinct observations
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