alandy08
contestada

Find the Standard Deviation of . Round you answers to the nearest hundredths.

(4.45, 5.50, 5.50, 6.30, 7.80, 11.00, 12.20, 17.20)

If you help me I’ll send you 3 great songs.

Respuesta :

fromzerotospyro

Answer:

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

4.45           8.74        -4.29          18.44  

5.50          8.74        -3.24           10.52  

5.50          8.74       -3.24            10.52  

6.30          8.74       -2.44            5.97  

7.80           8.74      -0.94            0.89  

11.0            8.74       2.26             5.09  

12.2           8.74       3.46             11.95  

17.2           8.74        8.46            71.51  

mean = average / (n-1) = 69.95 / (8-1) = 8.74

Ok after you do the above table

Add up the last column that will yield: 134.89

Sample variance = 134.99/(n-1) = 134.99/7 = 19.27

Standard deviation is square root of sample variance  sqrt(19.27) = 4.39

Step-by-step explanation:

Otras preguntas