The weights of students in a school is a :

The given graph shows the weights of students in a school on a particular day. The number of students weighing less than 50 kg is what per cent less than the number of students weighing 55 kg or more?

The given graph shows the weights of students in a school on a particular day. The number of students weighing less than 50kg is what percent less than the number of students weighing 55kg or more?

The mean weight of 120 students of a school is 52*75 kg. If the mean weight of 50 of them is 51 kg, find the mean weight of the remaining students.

The mean weight of 120 students of a school is 52*75 kg. If the mean weight of 50 of them is 51 kg, find the mean weight of the remaining students.

The mean weight of 34 students of a school is 42kg . If the weight of the teacher be included , the mean rises by 400 g. find the weight (in kg) of the teacher.

Answer the following : The means ans S.D. of weights and heights of 100 students of a school are as follows. Which shows more variability, weights or heights?

Given below are the cumulative frequencies showing the weights of 685 students of a school. Prepare a frequency distribution table. Weight (in kg), No. of students Below 25 Below 30 Below 35 Below 40 Below 45 Below 50 Below 55 Below 60 Below 65 Below 70, 0 24 78 183 294 408 543 621 674 685