The following table shows the number of students and the time they utilized daily for their studies. Find the mean time spent by students for their studies by direct method.

Following table shows the weights of 12 students: Find the mean weight.

Following table shows the weights of 12 students: Find the mean weight.

The following table shows the heights of students . Find the modal height of the students .

The following table indicates the number of students studying in three disciplines in five colleges: What is the ratio of the total number of students studying in the science stream to that of studying in commerce stream in all five colleges taken together?

Following table shows the weights of 12 students: Weight (in kgs): 6770727375 No. of Students: 43221 Find the mean weight.

The following table indicates the number of students studying in three disciplines in five colleges: What percentage of total students are studying in the commerce stream in all five colleges together?