A) The polygon formed by joining the middle points of the tops of bars of the histogram
B) A special type of bar graph to represent a frequency distribution. Here the bars are drawn adjacent to each other, class intervals are represented on the horizotnal axis and frequency on the vertical axis.
C) If the class intervals are plotted on the horizontal axis and the cumulative frequencies on the vertical axis against the upper class boundaries then the free hand curve through the points so plotted.
D) The curve formed by joining the middle points of the tops of bars of the histogram.
Correct Answer: D
Solution :
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