Define histogram, Mathematics

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Q. Define histogram?

Ans.

A histogram is a bar graph that gives the frequency of each value. Here are a few examples to illustrate the usefulness of this method of data representation.

Example: Clyde owns a Car Rental store. He records the number of days that each of 30 customers rented cars. Make a frequency table and a histogram for this car rental data:

1470_Define histogram.png

Solution: Make a frequency table.

1979_Define histogram1.png

Make a histogram by measuring 10 even widths for the number of days of the car rentals. Draw vertical bars to the height of the corresponding frequencies.

1976_Define histogram2.png

What is the mode of this data? Since the highest frequency is 5, the mode is 2 days.

Relative frequency tables are frequency tables that include a column which displays how frequently the data appears relative to the entire data set. The relative frequency is the probability, or percent frequency.


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