00:01
Sure, if you have to do this one by hand, it's easier done with technology, because if you did it by hand, you'd have to take each value, subtract the mean, square them all, then divide by n, and take the square root, because this is your formula for standard deviation.
00:27
The sum of their differences squared, divided by n, and then the square root of that.
00:32
So we're going to use the calculator.
00:34
Stat, edit, enter all the values into l1 by typing them in.
00:41
Then back to stat, over to calc, and choose number one, one bar stats.
00:49
Curser down to calculate, and there will be two screens here that i'm going to need.
01:01
So the first screen gives me my standard deviation.
01:05
My standard deviation is approximately 0 .865.
01:16
Now to make a box, plot, i need to use my five numbers summary.
01:23
So i can do it by hand by making a number line and going up by halves.
01:31
So 0 .5, 2, 3, and 4.
01:43
And then i'm going to place dots above my number line for the five important numbers.
01:50
6, 2, 3, 3 .2, 3 .2, and then 4.
01:59
And then 4.
02:01
And then i just need to draw my box around the q1 and the q3, a line to represent the median, and then deal with my two whiskers.
02:15
Actually, this one might be a little too close to 3 .5...