00:01
In problem 17, it says violent crimes include rape, robbery, assault, and homicide.
00:07
The following is a summary of the violent crime rate, violent crimes per 100 ,000 population for all 50 states in the united states plus washington, d .c.
00:16
In 2009.
00:18
So we're given q1 to be 255 .3, q2, which is also known as the median, to be 335 .5 and q3 to be 497 .2.
00:30
In part a, it says provide an interpretation of these results.
00:35
So in order to interpret these results, we have q1, which is the 25th percentile.
00:41
In a nutshell, that means that 25 percent of the u .s.
00:44
Had less than 255 .3 violent crimes.
00:47
That's in terms of states.
00:50
The median tells us about 50 percent.
00:52
So 50 percent of the u .s.
00:54
Had less than 335 .5 violent crimes, and then quartile three, which is the 75th percentile says that 75 % of the u .s.
01:02
Had less than 497 .2 violent crowns.
01:12
Part b.
01:16
We want to determine and interpret the intercortile range.
01:21
So the iqr, the inner quartile range, is the range between the third quartile and the first quartile.
01:29
So in this case, all we're doing is subtracting 497 .2 minus 255 .3.
01:38
And we get 241 .9.
01:48
So the interpretation for this value, the intercortal range, is the middle 50 % of the u .s.
02:09
Had, we'll play, had a range of 241 .9 violent crimes in 2009.
02:37
In c, it says the violent crime rate in washington, d .c.
02:43
In 2009 was 1 ,345 .9.
02:47
Would this be an outlier? so, d .c...