Question

3,1, 7,0,I've placed these data in the first column of the table below.Σ7317044,(x-x)sample standard deviation twice. Begin by using one o

Answer 1

we have the data set

3,1,7,0,4

step 1

Find out the sample mean

sample mean=(3+1+7+0+4)/5

sample mean=15/5

sa,ple mean=3

step 2

Complete the table

x (x-mean) (x-mean)^2 x^2

3 (3-3) (3-3)^2 0

1 (1-3) (1-3)^2 4

7 (7-3) (7-3)^2 16

0 (0-3) (0-3)^2 9

4 (4-3) (4-3)^2 1

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15 30

Find out the standard deviation of the sample

SD=√(30/n-1)

SD=√(30/5-1)

SD=2.74