Chapter 2, Problem 20P

### Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

Chapter
Section

### Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

# Fowler and Christakis (2008) report that personal happiness tends to be associated with having a social network including many other happy friends. To test this claim, a researcher obtains a sample of n = 16 adults who claim to be happy people and a similar sample of n = 16 adults who describe themselves as neutral or unhappy. Each individual is then asked to identify the number of their close friends whom they consider to be happy people. The scores are as follows: Happy: 8 7 4 10 6 6 8 9 8 8 7 5 6 9 8 9   Unhappy: 5 8 4 6 6 7 9 6 2 8 5 6 4 7 5 6   Sketch a polygon showing the frequency distribution for the happy people. In the same graph, sketch a polygon for the unhappy people. (Use two different colors, or use a solid line for one polygon and a dashed line for the other.) Does one group seem to have more happy friends?

To determine

To construct: The frequency polygon for the frequency distribution for the happy people and unhappy people.

Explanation

Given info:

The data shows the scores of the happy and unhappy people.

Calculation:

Software procedure:

The frequency polygon:

Step by step procedure to draw the frequency polygon using the Excel:

• Enter all the scores in one column of the data editor, probably VAR0000I and VAR00002.
• Click Analyze on the tool bar, select Descriptive Statistics, and click on Frequencies...

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