Chapter 4.3, Problem 2LCA

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

**a.** Sketch a histogram showing the frequency distribution for the following population of *N =* 6 scores: 12, 0, 1. 7, 4, 6. Locate the mean in your sketch, and estimate the value of the standard deviation.

**b.** Calculate SS, variance, and the standard deviation for these scores. How well does your estimate compare with the actual standard deviation?

**(a)**

To determine

**To draw:** The histogram for the frequency distribution of population scores.

**To locate:** The mean in the histogram.

Explanation

**Given info:**

The population scores are 12, 0, 1, 7, 4, and 6.

**Construction of histogram:**

**Software procedure:**

Step-by-step procedure for constructing histogram by EXCEL procedure:

- Enter data in to data Excel sheet.
- Select
**Mega Stat**option from**Add-Ins**menu. - Select
**Quantitative**from**Frequency Distributions**. - Select
**Input range**and choose**Histogram**. - Click
**Ok**.

*Calculating the standard deviation:*

The mean of the population scores is,

The standard deviation of the population score is,

**(b)**

To determine

**To find:** The sum of squared deviations, variance and standard deviation for the population of scores.

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