Question

The following table shows the cumulative frequency distribution of marks of $800$ students in an examination
Marks Number of students
Below $10-10$
Below $20-50$
Below $30-130$
Below $40-270$
Below $50-440$
Below $60-570$
Below$70-670$
Below$80-740$
Below $90-780$
Below $100-800$
Construct a frequency distribution table for the data above.

Answer 1

Frequency distribution table:

The data represents the cumulative frequency of marks of$800$ students in an examination

Marks	Cumulative frequency	Class interval	Frequency
Below $10$	$10$	$0-10$	$10$
Below$20$	$50$	$10-20$	$50-10=40$
Below $30$	$130$	$20-30$	$130-50=80$
Below $40$	$270$	$30-40$	$270-130=140$
Below $50$	$440$	$40-50$	$440-270=170$
Below $60$	$570$	$50-60$	$570-440=130$
Below$70$	$670$	$60-70$	$670-570=100$
Below $80$	$740$	$70-80$	$740-670=70$
Below $90$	$780$	$80-90$	$780-740=40$
Below $100$	$800$	$90-100$	$800-780=20$

Hence, the above table shows the frequency distribution for the data.