The marks scored by 40 students of class IX in mathematics are given below:
81, 56, 68, 79, 85, 13, 29, 68, 54, 73, 47, 35, 72, 64, 95, 44, 50, 77, 64, 35, 79, 52, 45, 54, 70, 83, 62, 64, 72, 92, 84, 76, 63, 43, 54, 38, 73, 68, 52, 54.
Prepare a frequency distribution with class size of 10 marks.

The weights (in kg) of 30 students of a class are 49, 48, 46, 48, 48, 50, 52, 53, 54, 43, 43, 41, 43, 55, 56, 48, 47, 41, 40, 49, 51, 51, 56, 46, 45, 44, 49, 53, 42 and 47. Prepare a frequency table for the above data and answer the following questions : What is the least weight ?

The weights (in kg) of 30 students of a class are 49, 48, 46, 48, 48, 50, 52, 53, 54, 43, 43, 41, 43, 55, 56, 48, 47, 41, 40, 49, 51, 51, 56, 46, 45, 44, 49, 53, 42 and 47. Prepare a frequency table for the above data and answer the following questions : Which weight is possessed by the maximum number of students ?

The weights (in kg) of 30 students of a class are 49, 48, 46, 48, 48, 50, 52, 53, 54, 43, 43, 41, 43, 55, 56, 48, 47, 41, 40, 49, 51, 51, 56, 46, 45, 44, 49, 53, 42 and 47. Prepare a frequency table for the above data and answer the following questions : Find the number of students having the maximum weight in the above data.

The weights (in kg) of 30 students of a class are 49, 48, 46, 48, 48, 50, 52, 53, 54, 43, 43, 41, 43, 55, 56, 48, 47, 41, 40, 49, 51, 51, 56, 46, 45, 44, 49, 53, 42 and 47. Prepare a frequency table for the above data and answer the following questions : Find the number of students having the least weight in the above data.

The following are the marks of 60 students in Mathematics 16,13,5,80,86,7,51,24,56,70,19,16,36,34,42,34,35,73,55,75,52,72,97,74,45,62, 68,86,35,81,75,55,26,95,31,7,78, 92,62,52,56,15,63,25,54,44,47,27,17,4,30 Construct a grouped distribution table with width 10 each of the class starting from 0-9.

A grouped frequency distribution table with classes of equal sizes using 63 - 72 (72 included) as one of the class is constructed for the following data : 30, 32, 45, 54, 74, 78, 108, 112, 66, 76, 88, 40, 14, 20, 15, 35, 44, 66, 75, 84, 95, 96, 102, 110, 88, 74, 112, 14, 34, 44. The number of classes in the distribution will be :

The final makrs in Mathematics of 30 students are as follows {:(53,61,48,60,78,68,55,100,67,90),(75,88,77,37,84,58,60,48,62,56),(44,58,52,64,98,59,70,38,50,60):} What is the range?

The final makrs in Mathematics of 30 students are as follows {:53,61,48,60,78,68,55,100,67,90,75,88,77,37,84,58,60,48,62,56,44,58,52,98,59,70,38,50,60:} What is the highest score?

The final marks in Mathematics of 30 students are as follows (53,61,48,60,78,68,55,100,67,90) (75,88,77,37,84,58,60,48,62,56) (44,58,52,98,59,70,38,50,60) How many have scored less than 50?

The final makrs in Mathematics of 30 students are as follows {:(53,61,48,60,78,68,55,100,67,90),(75,88,77,37,84,58,60,48,62,56),(44,58,52,98,59,70,38,50,60):} What is the lowest score?