একটি শ্রেণীর 15 জন শিক্ষার্থীর ওজন (কেজিতে) হল: 38, 42, 35, 37, 45, 50, 32, 43, 43, 40, 36, 38,

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?

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 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?

Prepare a frequency table of the following scores obtained by 50 students in a test: 42, 51, 21, 42, 37, 37, 42, 49, 38, 52 7, 33, 17, 44, 39, 7, 14, 27, 39, 42 42, 62, 37, 39, 67, 51, 53, 53, 59, 41 29, 38, 27, 31, 54, 19, 53, 51, 22, 61 42, 39, 59, 47, 33, 34, 16, 37, 57, 43

Study the following information and answer the questions based on it. The ages (in yr) of 15 teachers of a school are 32, 28, 45, 37, 53, 49, 41, 28, 54, 35, 26, 23, 33, 38 and 40. What is the age of the oldest teacher and that of the youngest teacher?

Two sections of class IX having 27 students in each section appeared for Mathematics olympiad. The marks obtained by them are shown below. 46, 31, 74, 68, 42, 54, 14, 61, 48, 37, 26, 8, 64, 57, 93, 72, 53, 59, 38, 16, 88, 56, 46, 66, 45, 61, 54, 27, 27, 44, 63, 58, 43, 81, 64, 36, 49, 50, 76, 38, 47, 77, 62, 53, 40, 71, 60, 45, 42, 34, 46, 40, 59, 42 One student is selected at random. Find the probability that selected student is having marks more than 49.

Find the median of the given data : 37, 31, 42, 43, 46, 25, 39, 45, 32