Given below are the ages of 40 people in a colony:
`{:(33,8,7,28,30,25,6,50,24,44),(56,32,27,21,17,62,58,16,14,19),(24,31,27,5,12,46,15,42,67,34),(4,21,10,40,20,50,48,63,9,21):}`
Taking class intervals 1-10, 11-20, 21-30, 31-40, 41-50, 51-60 and 61-70, we construct a frequency distribution table for th above data.

Given below are the ages of 45 people in a colony. {:(33,8,7,25,31,26,5,50,25,48,56),(33,28,22,15,62,59,16,14,19,24,35),(26,9,12,46,15,42,63,32,5,22,11),(42,23,52,58,62,10,24,43,51,37,48):} 36 Construct grouped frequency distribution for the given data with 6 class intervals.

Given below are the marks obtained by 30 students in an examination : {:(08,17,33,41,47,23,20,34,09,18,42,14,30),(19,29,11,36,48,40,24,22,02,16,21,15,32),(47,44,33,01,,,,,,,,,):} Taking class intervals 1-10, 11-20 ,......, 41 - 50 , Make a frequency table for the above 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.

Given below are the marks obtained by 40 students in an examination : 40 56 24 41 51 22 59 12 26 46 51 14 23 59 58 29 41 35 36 40 42 43 36 33 38 52 23 24 13 55 18 54 20 57 30 24 43 50 26 15 Taking class intervals 10-20, 20-30,. ...., 50-60 , construct a frequency table for the above distribution.

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.

Given below are the marks obtained by 24 students in an examination : {:(18 17 16 24 25 19 41 22),(32 42 44 21 43 26 28 40),(29 30 37 27 49 27 34 31):} Taking class intervals 10 - 20, 20 - 30, ............... , 50 - 60, make a frequency table for the above distribution.

Draw a histogram for the following {:("Class interval ", 11-20,21-30,31-40,41-50,51-60),(" Frequency "," "5, " "8, " "13 , " "10, " "6):}

The number of books in different shelves of a library are as follows: 30,32,28,24,20,25,38,37,40,45,16,20 19,24,27,30,32,34,35,42,27,28,19,34 38,39,42,29,24,27,22,29,31,19,27,25 28,23,24,32,34,18,27,25,37,31,24,23 43,32,28,31,24,23,26,36,32,29,28,21 Prepare a cumulative frequency distribution table using 45-49 as the last class-interval.

The ages of 30 teachers in a school are as follows: 25, 28, 43, 36, 27, 34, 50, 45, 30, 32, 51, 44, 33 31, 30, 35, 42, 45, 41, 47, 30, 34, 32, 35, 31, 36, 46, 56, 25, 36. 1. Make a frequency distribution table with intervals as 30-35. 2. Prepare a histogram of the above frequency distribution table.

Find the mode of the following distribution: (i) Class-interval: 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 Frequency: 5 8 7 12 28 20 10 10