Question

the mean of the number 10,20,30 and 40 is
a.20
b.25
c.30
d.50
​

Answer 1

Answer:

b)25

Hope this helps you.

Answer 2

Answer:

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mean = Sum of observation

Number of observation

mean = 10+20+30+40

4

mean = 100

4

mean = b) 25