00:01
In this exercise, we have data that represents the number of offenses for various robberies in the year 2003.
00:09
So the table shows the different types of robbery and the number in thousands.
00:15
In part a, we're going to construct a relative frequency distribution.
00:20
Now, for the relative frequency distribution, we need to introduce a new column there for relative frequency.
00:26
And then work out the relative frequencies for the different categories.
00:41
Now before we can do that, we have to get the sum of all the frequencies for each category.
00:51
It's 276.
00:53
We work out the relative frequencies for each category, which is given by the frequency devoid by the total frequency of 2076, sorry, 276, and then we copy the formula all the way down.
01:09
Now we have the relative frequency distribution for the data in this column.
01:17
In part b of the question we're going to get the percentage of robberies that were done at gas stations.
01:33
So for the gas stations, we're going to highlight it there, we see that the so proportion is 0 .036...