Question

Please...... answer it quickly!!

Answer 1

(1)Difference between two consecutive class marks is the class size.
Class size = 10 - 6 = 4.
Therefore, classes of the distrubution are, 4 - 8, 8 - 12, 12 - 16, 16 - 20, 20 - 24, 24 - 28, 28 - 32.
Lower limit of the second class = 8.
Upper limit of the last class = 32
Upper limit of the third class = 16.
(2)class mark = x
x2-x1=52-47=5
lower limit = xi -5
upper limit =xi+5

class limits 42-52,52-57,57-62,62-67,67-72,72-77,77-82
class size =h = difference between two lower limits
=52-42=10