Given:
A relative frequency polygon that shows pulse rates of women and men.
To determine the midpoints of the class with the most pulse rates for women and men, we first note that based on the given graph, the most pulse rates for women is 74.5 with more than 30% of relative frequency. While the most pulse rates for men is 64.5 with more than 40% of relative frequency.
Therefore, the midpoints of the class with the most pulse rates for women and men respectively is:
74.5, 64.5