The following table shows the cumulative frequency distribution of marks of 800 students in an examination.

Construct a frequency distribution table for the data above.

Here, we observe that 10 students have scored marks below 10 i.e., it lies between class interval 0 - 10. Similarly, 50 students have scored marks below 20. So, 50 – 10 = 40 students lie in the interval 10 – 20 and so on. The table of a frequency distribution for the given data is: