Question

The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its

The following is the distribution of weights (in kg) of 40 persons: | Weight (in kg) | 40-45 | 45-50 | 50-55 | 55-60 | 60-65 | 65-70 | 70-75 | 75-80 | |----------------|-------|-------|-------|-------|-------|-------|-------|-------| | Number of persons | 4 | 4 | 13 | 5 | 6 | 5 | 2 | 1 | Construct a cumulative frequency distribution (of the less than type) table for the data above.

The following are the ages of 300 patients getting medical treatment in a hospital on a particular day: | Age (in years) | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 | |----------------|-------|-------|-------|-------|-------|-------| | Number of patients | 60 | 42 | 55 | 70 | 53 | 20 | Form: (i) Less than type cumulative frequency distribution. (ii) More than type cumulative frequency distribution.

Write down what the ordinate (y-coordinate) of a point on a cumulative frequency curve represents.