# Relative Dispersion & Probability

Part A)

What is the relative dispersion for each group?

Explain the relative dispersion difference between the two?

Mean StdDev

Group 1 78 15

Group 2 47 10

Group 1 - Trashcan wt in rural area

Group 2 - Trashcan wt in city

NOTE: Both samples taken from large group.

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Part B)

One of the trash cans contained the following items:

Garbage 10 lbs

Paper 5 lbs

Plastic 3 lbs

Boxes 6 lbs

Misc. 10 lbs

For any given sample if even distributed:

a. The probability that the sample is boxes?

b. The above estimate was based on which probability concept?

https://brainmass.com/statistics/probability/relative-dispersion-probability-64456

#### Solution Preview

Statistics Fundamentals II - Chapter 6 ex. 5

Part A)

What is the relative dispersion for each group?

Solution:

The Dispersion is nothing but the spread of the random variable. Dispersion based on standard deviation is,

For Group 1

= = = 0.1923

For Group 2

= = = 0.2127

Explain the relative dispersion difference ...

#### Solution Summary

Solution attaches a .doc file showing how to calculate the relative dispersion between two groups and the probability that trashcans from those groups contain specific items.