Q93Short answer
The marks obtained (out of 20) by 30 students of a class in a test are as follows: 14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14, 19, 20, 7, 10, 13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20. Prepare a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4 –8 (excluding 8 and including 4).
Show answer
Class interval Tally marks Frequency 4–8 || 2 8 – 12 ||||| || 8 12 – 16 |||| |||| ||| 13 16 – 20 |||| 5 20 – 24 || 2 Total 30