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Hi, today we're going to focus on how to find a five number summary and draw a box plot.
00:08
We look at the question number five, we get a collection of data from all the us presidents on their respective inauguration day.
00:16
In order to find a five number summary, we're going to take our graph and calculator, we're going to turn it on, and we're going to hit the stat button.
00:27
After you hit the stat button, you'll see where there's a screen that says edit.
00:31
You're going to click edit.
00:33
And what you should have here is l1, l2, and l3 screen.
00:38
In order to get the data for the five number summary, we're going to put all the data into just our first list.
00:44
If anything's in here, you can just clear it out by hitting clear and then enter.
00:50
As you can see, mine is blank.
00:53
And so we fill in our data, right? so we put in 57, 61, 57, 57, 57, 58.
01:05
We continue to put in all of the data.
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So we have all of this data in so that we are able to now calculate our five number summary.
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64, 50, 48, 65, 52, 56, 46, 46, 54, 49, 50, 47, 55, 55, 55, 55, 45, 45, 49, 50, 57, 55, 55, 55, 55.
01:39
55, 54, 42, 51, 56, 551, 51, 602, 42, 42, 43, 556, 51, 52, 456, 51, 52.
01:58
555, 56, 61, 52.
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Notice i'm hitting enter after each time, so that all the data is in there accurately.
02:09
And so when you put all the data in, you want to check carefully that all the data is in, starting from 57, all the way down to 54.
02:19
Once you have all of that data, what you're going to do is hit stat one more time, except this time you're going to go over to calc.
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When you go over to calc, we're going to look for where it says one variable stats.
02:33
You're going to hit enter.
02:35
If you have a ti -84 plus, it might just give you all the information.
02:39
Punched in already, and then hit calculate.
02:42
On this calculator version, we're going to have to put in second number one to put in that we put in our first list.
02:50
And when you do that, you get a whole bunch of different information.
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All of this is meaningful, except in this question, we want to focus on a five number summary.
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So we scroll down, and we get our five number summary.
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Our five number summary consists of a minimum, a lower quartile, a median, an upper quartile and a maximum value.
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And so on my white board, i'm going to go back and i'm going to start to fill in some information.
03:22
Our minimum was 42.
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Our first quartile is 51.
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Our median was 55.
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Our q3, which is our upper quartile, was 57 .5.
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And finally, our max value is 60.
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And so this is our five number summary...