Form the frequency distribution table from the following data :
Marks (out of 90) | Number of candidates |
More than or equal to 80 More than or equal to 70 More than or equal to 60 More than or equal to 50 More than or equal to 40 More than or equal to 30 More than or equal to 20 More than or equal to 10 More than or equal to 0 |
4 6 11 17 23 27 30 32 34 |
Solution. Frequency distribution: It tells how frequencies are distributed over values in a frequency distribution. However mostly we use frequency distribution to summarize categorical variables.
class | f |
0-10 | 34-32=2 |
10-20 | 32-30=2 |
20-30 | 30-27=3 |
30-40 | 27-23=4 |
40-50 | 23-17=6 |
50-60 | 17-11=6 |
60-70 | 11-6=5 |
70-80 | 6-4-=2 |
80-90 | 4 |