The following table shows the ages of the patient of a certain disease admitted in a hospital during a year:
Age (in years) | 6-15 | 16-25 | 26-35 | 36-45 | 46-55 | 56-65 |
Nummber of patients | 6 | 11 | 21 | 23 | 14 | 5 |
Dear student
Regards
Age | No.of patients fi | xi | di=xi-A where A=40.5 | ui=di/h where h=10 | fiui |
5.5-15.5 | 6 | 10.5 | -30 | -3 | -18 |
15.5-25.5 | 11 | 20.5 | -20 | -2 | -22 |
25.5-35.5 | 21 | 30.5 | -10 | -1 | -21 |
35.5-45.5 | 23 | 40.5 | 0 | 0 | 0 |
45.5-55.5 | 14 | 50.5 | 10 | 1 | 14 |
55.5-65.5 | 5 | 60.5 | 20 | 2 | 10 |
Regards