Question

Draw a cumulative frequency curve for the following data

Age 0-10 10-20 20-30 30-40
Number of patients 15 12 8 20

Answer 1

Step-by-step explanation:

cumulative frequency diagram is drawn by plotting the upper class boundary with the cumulative frequency. The upper class boundaries for this table are 35, 40, 45, 50 and 55. Cumulative frequency is plotted on the vertical axis and length is plotted on the horizontal axis.