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

question 14

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 midpoint for the class 40 up to 50?

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Definitions:

Normally Distributed

A type of continuous probability distribution for a real-valued random variable where the data are symmetrically distributed around the mean, forming a bell-shaped curve.

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, showing how much the values in the data set deviate from the mean on average.

Continuous Random Variables

Continuous random variables are those that can take on an infinite number of values within a given interval, where the measurements can include fractions and decimals.

Interval

A range of values between two points, often used in statistics to describe the confidence interval around an estimate.