Differentiate between class limits and true class limits.Give examples
Lets go through the following example to understand about class limits and true class limits.
The class marks of a distribution are 47, 52, 57, 62, 67, 72.
Since the class marks are uniformly spread.
Therefore the class size is the difference between any two consecutive class marks.
class size=52-47=5
the lower limit of the first class=
the upper limit of the first class=
Therefore the first class interval=49.5-44.5=5
Similarly we can find the class limits of all the class marks given.
| class marks | class limits |
| 47 | 44.5-49.5 |
| 52 | 49.5-54.5 |
| 57 | 54.5-59.5 |
| 62 | 59.5-64.5 |
| 67 | 64.5-69.5 |
| 72 | 69.5-74.5 |
| 77 | 74.5-79.5 |
So the true class limits are same as the class limits
Hope this clears your query. If still you face any difficulty, do get back to us.