The graph is the cumulative frequency curve for the weight distribution of 100 workers in a factory. Which of the points P,Q,R,S and T indicates the median weight?
The median weight is the weight value corresponding to the 50th worker in this group of 100 (since the median is at the midpoint). On a cumulative frequency curve, draw a horizontal line from 50 on the y-axis to intersect the curve (likely at R), then drop a vertical line to the x-axis (weight), landing at Q. Thus, point Q indicates the median weight.
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