What is the angle at the centre of pie-chart?

List the outcomes you can see in these experiments.

(a) Spinning a wheel

(b) Tossing two coins together

Find the range of the data: 30, 61, 55, 56, 60, 20, 26, 46, 28, 56

What does the height of the rectangle in the histogram represents?

Themarks obtained by 40 students of class VIII in an examination are given below :

16, 17, 18, 3, 7, 23, 18, 13, 10, 21, 7, 1, 13, 21, 13, 15, 19, 24, 16, 3, 23, 5, 12, 18, 8, 12, 6, 8, 16, 5, 3, 5, 0, 7, 9, 12, 20, 10, 2, 23.

Divide the data into five groups namely 0-5, 5-10, 10-15, 15-20 and 20-25 and prepare a grouped frequency table.