Relative frequency can be expressed as a common fraction, in decimal form, but not as a percentage.
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Q. 2A bimodal distribution has two high-frequency classes separated by classes with lower frequencies. It is not necessary for the two high frequencies to be the same.
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Q. 3A histogram is a bar graph that represents a frequency distribution of categorical data.
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Q. 4If grouping data are used to form a frequency distribution, the class midpoint (sometimes called the class mark) is the numerical value that is exactly in the middle of each class. It is found by adding the class boundaries and dividing by 2 .
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Q. 5If grouping data are used to form a frequency distribution, the class width is the difference between the upper and lower class boundaries.
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Q. 6Frequency distributions are used in statistics to present large quantities of repeating values in a concise form.
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Q. 7The frequency of a class is the number of pieces of data whose values fall within the boundaries of that class.
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