The following data give the pocket expenses of 100 students of a school
/(weekly pocket expenses ( in rupees) : 30 35 45 50 55 60 65
number of students: 6 10 14 22 35 9 4 )\
Prepare a grouped frequency distribution of class intervals of equal , taking one of the class intervals as 30 – 40
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The frequency table for the marks of 40 students of class VIII in an examination is shown below:
Range of Marks No: of Students
0-5 9
5-10 9
10-15 7
15-20 9
20-25 6
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