Frequency Distribution Formula
A frequency distribution is the representation of data, either in a graphical or tabular format, to displays the number of observation within a given integral.
In Statistics, a frequency distribution is a table that displays the number of outcomes of a sample. Each entry occurring in the table contains the count or frequency of occurrence of the values within a group.
Solved Examples
Example: A survey was taken in Maple Avenue. In each of 20 homes, people were asked how many cars were registered to their households.The results were recorded as follows:
3, 1, 4, 0, 2, 1, 5, 2, 1, 5, 4, 2, 3, 2, 0, 2, 1, 0, 3, 2.
Present this data in Frequency Distribution Table.
Also find maximum number of cars registered by household.
Solution: Divide the number of cars (x) into intervals, and then count the number of results in each interval (frequency).
Thus creating the frequency Distribution Table
Number of Cars |
Frequency |
0 |
3 |
1 |
4 |
2 |
6 |
3 |
3 |
4 |
2 |
5 |
2 |
Thus, from the table it is clear that the 6 household has 2 cars.