The weights (in kg) of 30 students of a class are
39,43,32,37,29,26,31,45, 46,31,37,38,30,39,36,41,35,34,41,46,39,38,36,38,40,42,33,43,44,33.
Prepare a frequency distribution table using one class interval as 30-35 in which 30 is included and 35 excluded. using the above data, draw a histogram.

Weights (in kg) of 15 students of a class are 38, 42, 35, 37, 45, 50, 32, 43, 43 ,40, 36, 38, 43, 38 and 47? What is the mean weight?

The weights (in kg) of 35 persons are given below :43,51,47,62,48,40,50,62,53,56,40,48,56,53,50,42,55,52,48,46,45,54,52,50,47,44,54,55,60,63,58,55,60,58,53. Prepare a frequency distribution table taking equal class size. One such class is 40 - 45 (where 45 is not included).

Weights (in kg) of 15 students of a class are 38, 42, 35, 37, 45, 50, 32, 43, 43 , 40, 36, 38, 43, 38 and 47? How many modes are there in the given data?

The weights (in kg.) of 15 students of a class are: 38,42,35,37,45,50,32,43,43,40,36,38,43,38,47(i) Find the mode and median of this data.(ii) Is there more than one mode?

The marks obtained by 40 students of a class in an examination are given below, 8,47,22,31,17,13,38,26,3,34,29,11,22,7,15,24,38,31,21,35,42,24,45,23,21,27,29,49,25,48,21,15,18,27,19,45,14,34,37,34. Prepare a frequency distribution table with equal class intervals starting from 0-10 (where 10 is not included).

The marks obtained (out of 20) by 30 students of a class in a test are as follows: 14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14, 19, 20, 7, 10, 13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20. Prepare a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4-8 (excluding 8 and including 4).

The weight of 10 students (in kg) are 55,40,35,52,60,38,36,45,31,44. The median weight is

The weights (in kg) of 15 students are: 31,35,27,29,32,43,37,41,34,28,36,44,45,42,30 Find the median.If the weight 44kg is replaced by 46kg and 27kg by 25kg, find the new median.