There are 20 students in a class of them, the height of ten students is 150 cm each, the height of 6 students is 142 cm each and the height of 4 students is 132 cm each. Find the average height of all the students.

The average height of 20 boys is 120 cm and the average height of 10 girls is 117 cm. Find the average height of these 30 students.

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

The height of students are given below Find the mode of height.

Find the average height of the students from the given table.

The frequency distribution of the heights (in cm) of 100 students of class X in a school .Find the average height of the students .

The average height of 22 students of a class is 140 cm and the average height of 28 students of another class is 152 cm. What is the average height of students of both the classes?

Find the range of heights of any ten students of your class.

In a class of 88 students, the number of girls is 20% more than the number of boys. The average height of the boys is 164 cm and the average height of the girls is 4 cm less than the average height of all the boys and girls in the class. What is the average height (in cm) of all the students in the class ?