How do I find the standard deviation for the set of data 50, 60, 55, 44, 60, 55?

Question

How do I find the standard deviation for the set of data 50, 60, 55, 44, 60, 55?

Answer 1

first add all the numbers together for a grand total.  next divide the grand total by the total numbers given.  in this case the number will be  6.  

Example: 50+60+55+44+60+55=324

               324/6=54         Your answer is 54

Answer 2

http://www.gcseguide.co.uk/standard_devi...

Answer 3

First find the mean:  50+60+55+44+60+55=324/6=54

Then the difference squared for each data point with this mean:

For 50, e.g., it's 54-50=4 squared=16

So it's 16 + 36 + 1 + 100 + 36 + 1 = 190

Then you divide by the number of data points: 190/6 = 31.66667

This is the variance,  the standard deviation is just the square root

of this:  5.627

ANSWER