00:01
Okay, so relative frequency is the probability that something occurs.
00:04
So you have a frequency distribution which tells you like how many times it occurs.
00:08
And now we're just going to change that into a probability.
00:11
So this question did not include the actual frequency distribution.
00:17
So i had to look that up on the side.
00:20
And we'll go through that here.
00:25
So the first thing that you're going to do is you're going to look at all of the frequencies.
00:32
So we're going to split up, of course, non -filtered and filtered.
00:38
So looking at this chart, when i look at filtered, i have between four and seven, what's it called, four and seven milligrams of tar.
00:49
I have frequency of two, eight and eleven frequency of two, 12 and 15 frequency of five, and 16 to 19 frequency of 16.
00:59
And you want to compute the relative frequency.
01:03
So i add all that up 16 plus 5 plus 2 plus 2.
01:08
So 16 plus 5 is 21 plus 4 more is 25.
01:13
So i have 25 of these non -filtered cigarettes.
01:22
Sorry, that was filtered.
01:23
So 25 filtered.
01:24
So we'll start with this side.
01:26
So 25 total filtered cigarettes.
01:29
And again, 2 had 4 to 7 milligrams of tar.
01:34
Two had eight to 11.
01:36
This is just coming from the actual data that is given right here on the chart.
01:42
Five had 12 to 15.
01:48
And then where did it go? 16 had 16 to 19.
02:03
And then none had 20 and so on.
02:07
Okay, so let's break that up into percent.
02:10
So two out of 25 had four to seven.
02:14
Milligram, so 2 divided by 25 is 0 .08.
02:19
So that is 8%.
02:22
So because it has a percent there, you want to put in the percent, not the decimal.
02:27
And so then also 2 is 8 percent.
02:29
So 8 percent of the cigarettes had between 8 and 11.
02:34
And we do 5 divided by 25...