00:01
Hey there, welcome to numerate.
00:02
We're asked to find a sample standard deviation for this data set here.
00:07
So the equation for a sample standard deviation is s equals, for a sample, the square root of, so it's going to be the square root of our sum of squares.
00:23
Let's put it here, x minus the mean squared, divided by our sample size minus 1.
00:34
So it would be n minus 1.
00:37
Now we had to find our x bar first, so let's find our mean.
00:43
Our mean equals.
00:46
So our mean will equal to sum of all the values divided by our sample size.
00:51
So our sample size here, if we count one, two, three, four, five, six, seven, eight, nine, ten, eleven...