Q20 of 33 Page 14

The following table gives production yield per hectare of wheat of 100 farms of a village:



Draw ‘less than’ ogive and ‘more than’ ogive.



Less than method:




Now on x-axis upper class limits and on y-axis cumulative frequency, we plot the points: (55,2); (60,10) ;(65,22); (70,46); (75,84); (80,100)




More than method:


Now, Mark on x-axis lower class limit and on y-axis cumulative frequency. We plot the points: (50,100); (55,98); (60,90); (65,78); (70,54); (75,16)



More from this chapter

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18

During the medical check-up of 35 students of a class, their weights were recorded as follows:


Draw a less than type ogive for the given data. Hence, obtain the median weight from the graph and verify the result by using the formula.

 19

The following data gives the distribution of total monthly household expenditure of 200 families of a village. Find the modal monthly expenditure of the families. Also, find the men monthly expenditure:

 21

Compute the median for each of the following data

 22

A survey regarding the height (in cm) of 51 girls of class X of a school was conducted and the following data was obtained:



Find the median height.