Question

Use the given minimum and maximum data​ entries, and the number of​ classes, to find the class​ width, the lower class​ limits, and the upper class limits.
minimum​, 19 maximum​, 134,8 classes

Answer 1

Using proportions and the information given, it is found that:

• The class width is of 14.375.

• The lower class limits are: {19, 33.375, 47.750, 62.125, 76.500, 90.875, 105.250, 119.625}.

• The upper class limits are: {33.375, 47.750, 62.125, 76.500, 90.875, 105.250, 119.625, 134}.

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• Minimum value is 19.
• Maximum value is of 134.
• There are 8 classes.
• The classes are all of equal width, thus the width is of:

$W = \frac{134 - 19}{8} = 14.375$

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The intervals will be of:

19 - 33.375

33.375 - 47.750

47.750 - 62.125

62.125 - 76.500

76.500 - 90.875

90.875 - 105.250

105.250 - 119.625

119.625 - 134.

• The lower class limits are: {19, 33.375, 47.750, 62.125, 76.500, 90.875, 105.250, 119.625}.

• The upper class limits are: {33.375, 47.750, 62.125, 76.500, 90.875, 105.250, 119.625, 134}.

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