Q13 of 174 Page 546

Present the following as an ordinary grouped frequency table:





















Marks (below)



10



20



30



40



50



60



Number of students



5



12



32



40



45



48


Grouped frequency table can be drawn as shown below;
































Marks



No. of students



0 – 10



5



10 – 20



7



20 – 30



20



30 – 40



8



40 – 50



5



50 – 60



3



More from this chapter

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11

The electricity bills (in rupees) of 40 houses in a locality are given below:

116, 127, 107, 100, 80, 82, 91, 101, 65, 95, 87, 81, 105, 129, 92, 75, 89, 78, 87, 81, 59, 52, 65, 101, 115, 108, 95, 65, 98, 62, 84, 76, 63, 128, 121, 61, 118, 108, 116, 130.


Construct a grouped frequency table.

 12

Following are the ages (in years) of 360 patients, getting medical treatment in a hospital:





















Age (in years)



10-20



20-30



30-40



40-50



50-60



60-70



Number of patients



90



50



60



80



50



30



Construct the cumulative frequency table for the above data.

 14

Given below is a cumulative frequency table:































Marks



Number of students



Below 10



17



Below 20



22



Below 30



29



Below 40



37



Below 50



50



Below 60



60



Extract a frequency table from the above.

 15

Make a frequency table from the following:



































Marks obtained



Number of students



More than 60



0



More than 50



16



More than 40



40



More than 30



75



More than 20



87



More than 10



92



More than 0



100