Consider the following frequency table representing the distribution of the price of a newspaper (in dollars).

Price of a Newspaper (in Dollars)ClassFrequency

0.20–0.290.20–0.29

88

0.30–0.390.30–0.39

88

0.40–0.490.40–0.49

1414

0.50–0.590.50–0.59

1111

0.60–0.690.60–0.69

77

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Determine the class width of each class.

To correctly determine the class width for each class in the frequency table, we use the following formula:

\[
\text{Class Width} = \text{Lower Class Limit of Next Class} - \text{Lower Class Limit of Current Class}
\]

Let’s calculate the class width for the given classes.

### 1st Class: \( 0.20 - 0.29 \)
The lower class limit of the next class is \( 0.30 \).
\[
\text{Class Width} = 0.30 - 0.20 = 0.10
\]

### 2nd Class: \( 0.30 - 0.39 \)
The lower class limit of the next class is \( 0.40 \).
\[
\text{Class Width} = 0.40 - 0.30 = 0.10
\]

### 3rd Class: \( 0.40 - 0.49 \)
The lower class limit of the next class is \( 0.50 \).
\[
\text{Class Width} = 0.50 - 0.40 = 0.10
\]

### 4th Class: \( 0.50 - 0.59 \)
The lower class limit of the next class is \( 0.60 \).
\[
\text{Class Width} = 0.60 - 0.50 = 0.10
\]

### 5th Class: \( 0.60 - 0.69 \)
There is no next class, but we

Consider the following frequency table representing the distribution of the price of a newspaper (in dollars). Determine the class width of each class.

Learn how to calculate the class width from a frequency distribution table using the formula: Class Width = Lower Class Limit of Next Class - Lower Class Limit of Current Class. This example covers newspaper price data and is suitable for Grades 9-12.

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