Refer to the accompanying data set and use the 25 home voltage measurements to construct a frequency distribution with five classes. Begin with a lower class limit of 122.9 volts, and use a class width of 0.2 volt. Does the result appear to have a normal distribution? Why or why not?

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MrRoyal MrRoyal · Answer 1 · 2022-02-07T12:03:22+01:00

A frequency distribution table is a table that summarizes data in two columns.

The result does not appear to have a normal distribution.

From the dataset, we have the following classes using 5 classes with a lower class limit of 119.4 and a class width of 0.2 volts

119.4 - 119.6, 119.7 - 119.9, 120.0 - 120.2. 120.3 - 120.5. and 120.6 - 120.8

So, the frequency distribution table is:

Class Frequency

119.4 - 119.6 4

119.7 - 119.9 10

120.0 - 120.2 6

120.3 - 120.5 5

120.6 - 120.8 0

The result does not appear to be normal.

This is so, because the frequency table do not go in form of a bell shape

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