A running total of the number of observations in successive categories.
For example, an elementary school records the number of students in grades one through six. The rightmost column contains the cumulative count of the student population:
|
Grade level |
Count |
Cumulative Count |
|
|
1 |
49 |
49 |
= 49 |
|
2 |
58 |
107 |
= 49 + 58 |
|
3 |
52 |
159 |
= 49 + 58 + 52 |
|
4 |
60 |
219 |
= 49 + 58 + 52 + 60 |
|
5 |
48 |
267 |
= 49 + 58 + 52 + 60 + 48 |
|
6 |
55 |
322 |
= 49 + 58 + 52 + 60 + 48 + 55 |
The cumulative count indicates:
Free online chart generators for statistical analysis:
Useful tools: