Weight of some students is given below in hilograms. Find out standard deviation.
41,44,45,49,50,53,55,55,58,60

The weights of a group of children at 6 month are given below: Find the standard deviation.

The following data gives marks obtained by 7 students of a class. Find out standard deviation of the marks. 40,42,38,44,46,48,50

Find the standard deviation of the following data : 49,63,46,58,52,60,54

The time taken by 50 students to complete a 100 meter race are given below. Find its standard deviation.

The distribution below gives the weight of 30 students in a class. Find the median weight of students: Weight (in kg): 40-45 45-50 50-55 55-60 60-65 65-70 70-75 No. of students: 2 3 8 6 6 3 2

The distribution below gives the weight of 30 students in a class. Find the median weight of students: Weight (in kg): 40-45 45-50 50-55 55-60 60-65 65-70 70-75 No. of students: 2 3 8 6 6 3 2

The weights of 50 custard apples are given below . ( In grams ) 35 , 40 , 45 , 40 , 50 , 55 , 60 70 , 75 , 80 , 90 , 94 , 45 , 60 , 65 , 35 , 65 , 35 , 25 , 24 , 34 , 45 , 54 , 63 , 72 , 85 , 99 , 36 , 65 , 49 , 84 , 73 , 54 , 43 , 44 , 23 , 33 , 43 , 53 , 63 , 73 , 83 , 93 , 44 , 55 , 65 , 74 , 89 , 77 , 60 Construct a grouped frequency distribution table with classes 20 – 30 , 30 – 40 , ……………………………… 90 – 100 .

Find the median of : 34,47,41,52,53,56,35,49,55 and 42.

Find the median weight for following Data weight in kg 45,46,48,50,52,54,55

Find the mean deviation of 36, 72, 46,60, 42, 45, 53. 46, 51, 49.