Question

fallossing
7. Find the authmetic mean of the
a) 2, 4, 6, 8, 10, 12, 14, 16, 18,20
b) 5, 10, 15, 20,25,30,35, 40
C 73, 8,4,5,6,6,2​

Answer 1

Answer:

a) 10

b) 22.5

c) 14.857

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

mean = sum of observation/no.of observation

=by adding all the no. we get 110

no. of observation = 10

110/10=11 ans

another way

if the difference is same between the no. like in option a all have the difference 2 then the formula is

ist no. +last no. /2

2+20= 22/2 = 11 ans

Qno. 2 180/8=22.5

Qno. 3 104/7=41.42....