Find the mean weight of `20` students in your class.

The mean weight of a group of 9 students is 19 kg . If a body of weight 29 kg is joined in the group , then find the mean weight of 10 students. The following are the steps involved in solving the above problem . Arrange them in sequential order . (A) The mean weight of 10 students = (200)/(10) kg (B) The total weight of 9 students = 9 xx 19 kg = 171 kg (C) The total weight of 10 students = (171 + 29) kg = 200 kg (D) therefore The mean weight = 20 kg

Following is the data showing weights of 40 students in a class . Find its median .

The mean weight of 20 students is 25 kg and the mean weight of another 10 students in 40 kg . Find the mean weight of the 30 students .

If the average weight of the students of a class is 15kg, the average weight of the students of another class is 30kg and average weight of the students of both the classes is 25kg, then find the ratio of the number of students of the first class to the another class.

If the mean weight of 10 students is 25 kg and the mean weight of another 10 students is 35 kg, then the mean weight of 20 students is _______.

In a class there are 50 students.Their average weight is 45 kg.When a student leaves the class,the average is reduced by 100 g.Find the weight of the student who left the class.

The average weight of 29 students in a class is 48 kg. If the weight of the teacher is included, the average weight rises by 500 g. Find the weight of the teacher

The mean weight of 60 students of a class is 52.75 kg. If mean weight of 25 students of this class is 51 kg, find the mean weight (in kg) of remaining 35 students of the class

Find the mode of sizes of shirts of students in your class.