Question

Find the mean of all the even number between 11and 21

Answer 1

Step-by-step explanation:

• Even numbers between 11 & 21 are : 12, 14, 16, 18, 20
• Sum of the even numbers between 11 & 21 is : 80

So, Mean = Sum of the even numbers ÷ Total number of observation

Therefore,

Required Mean = 80/5 = 16

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