The marks of 24 candidates in the subject mathematics are given below :
`{:45, 48, 15, 23 ,30 ,35, 40, 11,29, 0 ,3 ,12, 48 ,18 ,30,15 ,30, 1, 1, 42, 23, 2 ,3 ,44:}`
The maximum marks are 50. Make a frequency distribution taking class intervals 0 - 10, 10 - 20, ...............

The marks obtained by 40 students of class IX in an examination are given below: 18, 8, 12, 6, 8, 16, 12, 5, 23, 2, 16, 23, 2, 10, 20, 12, 9, 7, 6, 5, 3, 5, 13, 21, 13, 15, 20, 24, 1, 7, 21, 16, 13, 18, 23, 7, 3, 18, 17, 16 Present the data in the form of a frequency distribution using the same class size, one such class being 15-20 (where 20 is not included)

The marks obtained by 12 students in an examination (out of 50) are given below: 18, 35, 2, 27, 40, 0, 21, 33, 27, 8, 36, 23 Find the mean marks.

The marks obtained by 40 students of class VIII in an examination are given below: 18,8,12,0,8,16,12,5,23,2,16,23,2,10,20,12,9,7,6,5,3,5, 13,21,13,15,20,24,1,7,21,16,13,18,23,7,3,18,17,16 Present the data in the form of a frequency distribution using the same class size, one such class being 15-20 (where 20 is not included).

Find the mean of the following frequency distributions: Class interval: 0-6 6-12 12-18 18-24 24-30 Frequency: 7 5 10 12 6

Find the mean of the following frequency distributions: Class interval: 0-6 6-12 12-18 18-24 24-30 Frequency: 6 8 10 9 7

Given below are the marks obtained by 32 students in an examination : {:(29 23 30 40 11 01 15 35),(40 03 12 18 30 24 25 29),(31 32 25 22 27 12 13 02),(07 09 19 13 32 39 25 03):} Taking class intervals 1 - 10, 11 - 20............... 31 - 40, make a frequency table for the above distribution.

Find the mean of the following frequency distributions: Class interval: 0-10 10-20 20-30 30-40 40-50 Frequency: 9 12 15 10 14

The marks scored by 55 students in a test are given below: Marks 0-5 5-10 10-15 15-20 20-25 25-30 30-35 No. of Students 2 6 13 17 11 4 2 Construct a cumulative frequency distribution.

Following are the marks obtained by 30 students in an examination : {:(15,20,8,9,10),(16,17,20,24,30),(44,47,38,36,40),(27,25,28,30,19),(7,11,21,31,41),(37,47,23,20,17):} Taking class intervals 0-10 , 10-20,............ ., 40-50, construct a frequency table.

The marks obtained out of 50, by 102 students in a Physics test are given in the frequency table below: Marks (x) : 15 20 22 24 25 30 33 38 45 Frequency (f) : 5 8 11 20 23 18 13 3 1 Find the average number of marks.