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A frequency distribution in which the data is only nominal or ordinal. Ungrouped Frequency Distribution. A frequency distribution of numerical data. The raw data is not grouped. Grouped Frequency Distribution. A frequency distribution where several numbers are grouped into one class.
The relative frequency histogram gives the fraction of times the data occur in the particular group or interval. Relative frequency distribution of a class is the ratio of the frequency of the class to the total number of the items.A uniform distribution often means that the number of classes is too small, each class has about the same number of elements. It may describe a distribution which has several peaks.he relative frequency table is a compact numerical way to present how the data is distributed. If the frequencies are plotted as columns, the resulting plot is called a histogram. A frequency distribution shows the number of items in each of several overlapping classes.