The following are the ages of 300 patients getting medical treatment in a hospital on a particular day :
Age (in yeras) | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 |
Number of patients | 60 | 42 | 55 | 70 | 53 | 20 |
(i) Less than type cumulative frequency distribution.
(ii) More than type cumulative frequency distribution
Solution. Frequency distribution: It tells how frequencies are distributed overvalues in a frequency distribution. However mostly we use frequency distribution to summarize categorical variables.
Age (in year) | No.of patients |
less than 10 | 0 |
less than 20 | 60+0 = 60 |
less than 30 | 42+60 = 102 |
less than 40 | 102+55 =157 |
less than 50 | 157+70 = 227 |
less than 60 | 227+53 =280 |
less than 70 | 280 +20 =300 |
Age (in year) | No.of patients |
More than or equal to 10 More than or equal to 20 More than or equal to 30 More than or equal to 40 More than or equal to 50 More than or equal to 60 |
60+42+55+70+53+20 = 300 42+55+70+53+20 = 240 55+70+53+20= 198 70+53+20 = 143 53+20 = 73 20 |