Question

class interval = 10-20, 20-30, 30-40, 40-50, 50-60, 60-70. Frequency = 3, 7, 10, 6, 8, 2.​

Answer 1

Answer:

6

Step-by-step explanation:

=summition of all frequencies/no. of frequencies

= 3+7+10+6+8+2/6

=36/6

=6

Answer 2

step by step explanations are given ,

First ,find the mid value of class interval

secondly ,find the deviation

thirdly, multiple frequency and the deviation.