Ungrouped frequency tables
The number of days absence during a term of a group of 30 students at a sixth form college is:
Summarised in a ungrouped frequency table:
In a frequency table, the left-hand column shows the value of the variable. The right-hand column shows the frequency with which each individual value of the variable occurs.
Cumulative frequency tables
Draw a cummulative frequency distribution table for this data:
1 2 3 2 1 0 4 3 3 2
0 2 2 1 4 2 3 1 2 0
1 1 3 2 0 2 4 4 1 0
The cummulative frequency table is:
Frequency distribution table for qualitative data
A frequency distribution table (or frequency table) for qualitative data lists all the categories and the number of elements in the data set that belongs to each category. The number of elements in a category is called the frequency of that category which displays the number of times the category occurs in a collection of data.