Question

The runs scored by two teams A and B on the first 60 balls in a cricket match are given below: | Number of balls | Team A | Team B | |-----------------|--------|--------| | 1 - 6 | 2 | 5 | | 7 - 12 | 1 | 6 | | 13 - 18 | 8 | 2 | | 19 - 24 | 9 | 10 | | 25 - 30 | 4 | 5 | | 31 - 36 | 5 | 6 | | 37 - 42 | 6 | 3 | | 43 - 48 | 10 | 4 | | 49 - 54 | 6 | 8 | | 55 - 60 | 2 | 10 | Represent the data of both the teams on the same graph by frequency polygons. [Hint : First make the class intervals continuous.]

For drawing a frequency polygon of a continous frequency distribution, we plot the points whose ordinates are the frequencies of the respective classes and abcissae are respectively:

Following table shows a frequency distribution for the speed of cars passing through at a particular spot on a high way: Class interval (km/h) 30 - 40, 40 - 50, 50 - 60, 60 - 70, 70 - 80, 80 - 90, 90 - 100; Frequency 3, 6, 25, 65, 50, 28, 14. Draw a histogram and frequency polygon representing the data above.

Refer to Q. 7: Draw the frequency polygon representing the above data without drawing the histogram.