Jawabanmu

2014-08-28T17:10:00+07:00
Calculating the standard deviation
First, put the scores in order down the page.
Then, work out the mean.
Now calculate how much each deviates from the mean.
Next, square each of these deviations.
Add them all up.
Now divide by the number of scores.
Lastly find the square root. 
This is the standard deviation.