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Essentials of Statistics for the B...

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

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Chapter
Section
BuyFindarrow_forward

Essentials of Statistics for the B...

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

Find each or the followin.tt values for the distribution shown in the following polygon.

  1. a. n
  2. b. ΣX
  3. c. ΣX2

images

a.

To determine

To Find: The n value for the frequency distribution.

Explanation

Given info:

The frequency polygon is given in the question.

Justification:

The value of n is the sum of frequencies showing in the given frequency polygon. Just add all the frequencies showing by the red dots in the given frequency polygon:

f

b.

To determine

To Find: The X value for the frequency distribution.

c.

To determine

To Find: The X2 value for the frequency distribution.

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