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Consider the marks, out of 100, obtained...

Consider the marks, out of 100, obtained by 51 students of a class in a test, given in Table 14.9.`M a r k sN u m b e r\ o f\ S t u d e n t s0-10 5 10-20 10 20-30 4 30-40 6 40-50 7 50-60 3 60-70 2 70-80 2 80-90 3 90-100 9Tot a l 51`Draw a freque

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Consider the marks, out of 100, obtained by 51 students of a class in a test, given in Table 14.9. M a r k s"N u m b e r o f S t u d e n t s"0-10 5 10-20 10 20-30 4 30-40 6 40-50 7 50-60 3 60-70 2 70-80 2 80-90 3 90-100 9Tot a l 51 Draw a freque

The marks in science of 80 students of class X are given below: Find the mode of the marks obtained by the students in science. Marks: 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 90-100 Frequency: 3 5 16 12 13 20 5 4 1 1

Find the mean of the marks obtained by 30 students of Class IX of a school, given in Example 2. 10 20 36 92 95 40 50 56 60 70 92 88 80 70 72 70 36 40 36 40 92 40 50 50 56 60 70 60 60 88

For the following data, draw a histogram and a frequency polygon: Marks: 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 900-100 No. of Students 5 10 4 6 7 3 2 2 3 9

Find the median of the following data: CLASS ; 0-10 , 10-20 , 20-30 , 30-40 , 40-50 , 50-60 , 60-70 , 70-80 , 80-90 , 90-100 FREQUENCY ; 5 ,3 , 4 , 3 , 3 , 4 , 7 , 9 , 7 , 8

Find the mean of the marks obtained by 30 students of Class IX of aschool, given in Example 2.10 20 36 92 95 40 50 56 60 7092 88 80 70 72 70 36 40 36 4092 40 50 50 56 60 70 60 60 88

Find the median of the following data: class : 0-10 , frequency :5 , 10-20 , 3 , 20-30 , 4 , 30-40 , 3 , 40-50 , 3, 50-60 , 4, 60-70 , 7 , 70-80 , 9 , 80-90 , 7 , 90-100 , 8 ,

Find the median of the following data: class : 0-10 , frequency :5 , 10-20 , 3 , 20-30 , 4 , 30-40 , 3 , 40-50 , 3, 50-60 , 4, 60-70 , 7 , 70-80 , 9 , 80-90 , 7 , 90-100 , 8 ,

Compute mean deviation from mean of the following distribution: Marks 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 No. of students 8 10 15 2 20 18 9 5

The following table gives the marks scored by 378 students in an entrance examination : Marks 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 90-100 No. of Students 3 12 36 76 97 85 39 12 12 6 From this table form (i) less than series, and (ii) the more than series.