Ages (Rounded to the Nearest Whole Year) of Employees at a Large

question 48

Essay

Ages (rounded to the nearest whole year) of employees at a large company were grouped into a distribution with the following class limits:
20 up to 30
30 up to 40
40 up to 50
50 up to 60
60 up to 70
What is the class interval?

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Definitions:

Normal Approximation

A method of estimating the distribution of a sample statistic using the normal distribution, often applied when the sample size is large.

Binomial

Pertaining to a probability distribution or experiment where each trial has two possible outcomes.

Probability of Success

The likelihood or chance of an event happening that is considered a favorable outcome.

Normal Curve

A symmetric bell-shaped curve that represents the distribution of many types of data; most values remain near the mean and the frequencies decrease further from the mean.