Question

If[1,2,4,8,16]is a sample of five observation selected at random from a population, then the mean is
A) 5:9 b) 6:1 c) 6:2 d) 6:3

Answer 1

Answer:

Step-by-step explanation:

5:9

Answer 2

The value of the sample mean is 6.2 .

Explanation:

Given : Sample = [1,2,4,8,16]

Number of observations : n= 5

Sum of observations = 1+2+4+8+16= 31

Now , the sample mean will be :

$\text{Sample mean}=\dfrac{\text{Sum of observations}}{\text{\text{Number of observations}}}\\\\=\dfrac{31}{5}=6.2$

Hence, the value of the sample mean is 6.2 .

# Learn more :

Marks of 12 students in a unit test are given as 4,21,13,17,5,9,10,20,19,12,20,14 assume a mean and calculate the arithmetic mean of the data. Assume another number as mean calculate the arithmetic mean again.Do you get the same result.

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