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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.
Frequency distribution: A frequency distribution is any arrangement of data that shows the frequency of occurrence of different values of the variable or the frequency of occurrence of values falling within arbitrarily defined ranges of the variable called class intervals.b = Sum of the frequencies below the median class. fm = frequency of median class. So, Median = 94.5 +. = 96.64. MODE. In case of raw data mode is the most frequently occurring observation. And in case of a frequency distribution mode is the mid point of the class having highest frequency.