Thirty people were recently polled about the average monthly...

Thirty people were recently polled about the average monthly balance in their checking accounts. The results of this poll are shown in the following histogram. Use this graph to answer Exercises 97 through 102. See Section 1.3. What percent of people polled reported an average checking balance of $\$ 201$ to $\$ 300 ?$ Round to the nearest tenth of a percent.

Thirty people were recently polled about the average monthly balance in their checking accounts. The results of this poll are shown in the following histogram. Use this graph to answer Exercises 97 through 102. See Section 1.3.
What percent of people polled reported an average checking balance of $\$ 201$ to $\$ 300 ?$ Round to the nearest tenth of a percent.

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Key Concepts

Histogram

A histogram is a graphical representation used to organize a group of data points into user-specified ranges, or bins. It is especially useful in statistics for visualizing the frequency distribution of numerical data, making it easier to see patterns such as central tendency and spread.

Relative Frequency

Relative frequency represents the proportion of the total number of observations that fall within a particular interval or category. It is calculated by dividing the frequency of the specific category by the overall number of observations, providing a basis for comparing different intervals on a common scale.

Percentage Calculation

Calculating percentages involves converting a fraction or relative frequency into a percentage by multiplying by 100. This standardization allows for an easy understanding and comparison of proportions within a data set.

Rounding

Rounding is the process of reducing the number of digits in a number while maintaining its approximate value. Specifically, rounding to the nearest tenth involves adjusting the value to one decimal place, which simplifies the result for reporting and interpretation.

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