00:04
Hi, we're looking at question 109, and there are several parts to this question, so we'll just work our way through them.
00:12
Starting with part a, where they want us to fill in the column that says we're getting suicides for individuals over 64.
00:21
So they've gathered information on suicides from different ages, races, and sexes, and compiled them into a table, but the table is incomplete.
00:30
So since we're filling in a column, we're going to use our row information.
00:34
To calculate each of these.
00:37
So starting with the white male row to be able to fill in the column over 64, we start with the total, which is 22 ,050, and then we're going to subtract each of the values that we know.
00:50
So we'll do subtract 210 for the 1 through 14 age bracket, 3 ,360 for the 15 through 24 age bracket, and 13 ,610 for the 25 through 64 bracket, which leaves 4 ,870 for the over 64.
01:16
We're going to follow a similar pattern for the white female.
01:20
The total for the row is 4 ,930, and we will subtract 80 for the first column, 580 for the second, and then 3 ,380 for the third, leaving us with a total for the over 64 of 890.
01:42
Now we'll do the same thing with the black male.
01:44
The total is 1 ,670.
01:47
Then we'll subtract the 10 from the first column, the 460 from the second column, and the 1 ,060 from the third column, which leaves us with 104.
02:02
For that row.
02:06
And then we'll do the black female row similarly, 330, and subtract the 0 for the first column, the 40 for the second column, and the 270 for the third column, leaving us with 20 for the over 64 set.
02:26
And then i'm changing to red because we're going to jump to totals.
02:30
Because the all others row is empty we can't fill that one in on its own but we can fill in our total and then use all of our information to go back and get the all others spot so our total we have 29 ,760 and then we can subtract each of the values from that row so that would be 310 and subtract 4 ,6 650 for the second column and 18 ,780 for the third column, which leaves us with 6 ,020.
03:14
Now we can use that 6 ,020 here and subtract our answers that we got right here.
03:22
So we'll subtract the 4 ,870, subtract the 890, subtract the 140, and subtract the 20.
03:31
So you want to be careful that you've done your subtractions there carefully to make sure that you get the right answers so that this one's correct.
03:38
And so we have 100 for the all others.
03:41
So we've now successfully filled in the over 64 column for part a.
03:46
For part b, we're going to work similarly through the all others row now.
03:52
So now because we're working the row, we're going to use the columns to do the subtraction.
03:57
So for the 1 through 14 set, we have a total of.
04:02
I have a total, let me erase those for you and we'll go back and try this again.
04:14
So we have a total of 310 and we're going to subtract the 210 and subtract the 80s.
04:24
So i'm just going down the column in this case and then subtract the 10 and subtract the 0.
04:31
So that leaves for the all others, 10.
04:37
Similarly, i'm going to take the total for the column 15 to 24, which is 4 ,650, and i'll subtract the white male, which is 3 ,360, and subtract the white female, which is 580, and then subtract the black male, which is 460.
05:07
And then subtract the black female, which is 40, and that leaves me with 210 to fill in the all -other spot.
05:17
25 to 64 will work the same way.
05:20
I'm going to start with my total at the bottom, 18 ,780, and then i'm just going to work my way down the column.
05:28
So i'm going to start with the white males, and you could work your way up the column if you prefer it.
05:33
Obviously, won't change the answer at the end.
05:35
And so i'm just going to subtract each of the values in the column from my total and that leaves me with 460...