00:01
Okay, so i see that you need help with this problem, and it wants you to find the standard deviation of this dataset.
00:05
So it's 104 .1, 128 .8, 314 .3, 134 .6, oops, 134 .6, 123 .5, 141 .8.
00:22
So you're going to first total them up and find the average.
00:26
So 104 .1, 128 .8, 314 .3, 134 .3, 123 .5, 141 .8.
00:41
And so that is 946 .8 divided by 6, and that's 157 .8.
00:51
So i'm going to take each one of these values, subtract it from 157 .8, and then i'm going to square it.
00:58
So 104 .1 minus 157 .8, and then squaring that is 2883 .69, 128 .8 minus 157 .8, squaring that is 841...