The marks 30 students of a class, obtained in a test (out of 75) , are given below : 42, 21, 50, 37, 42, 37, 38, 42, 49, 52, 38, 53, 57, 47, 29, 59, 61, 33, 17, 17, 39, 44, 42 39, 14, 7, 27, 19, 54, 51. From a frequency table with equal class intervals.(Hint : one of them being 0-10)

The marks of 30 students of a class of 10 in a test (out of 75) are given below 40, 21, 50, 37, 42, 37, 38, 42, 49, 52, 38, 53, 57, 47, 29, 59, 61, 33, 17, 17, 39, 44, 42, 39, 14, 7, 27, 19, 54, 51. Form a frequency table with equal class intervals.

The marks obtained by 35 students in a test in statistics (out of 50) are as below. {:(35,1,15,35,45,23,31,40,21,13,15),(20,47,48,42,34,43,45,33,37,11,13),(27,18,12,37,39,38,16,13,18,5,41),(47,43, , , , , , , , ,):} Construct a frequency distribution table with equal class intervals, one of them being 10-20 (20 is not included).

The following marks achieved by 30 candidates in mathematics of SSC examination held in the year 2010.45, 56, 75, 68, 35, 69, 98, 78, 89, 90, 70, 56, 59, 35, 46, 47, 13, 29, 32, 39,93, 84, 76, 79, 40, 54, 68, 69, 60, 59. Construct the frequency distribution table with the-class intervals, failed (0 – 34), third class (35 - 49), second class (50 - 60), first class (60 - 74) and distinction (75-100).

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.