00:01
All right, this is problem number eight from chapter nine.
00:03
There are two parts of this question.
00:04
The first is asking in which of these five cities did housing prices increase the fastest from april 2014 to 2015 using this figure on the right.
00:14
So what it's asking is which of these are the highest inflation rate.
00:17
So let's measure that.
00:18
The way we're going to do that is we're going to do cpi 2, this one, minus cpi 1, that one, divided by cpi 1.
00:26
So 179 .3 minus 174 .5.
00:30
Let me write new york first, actually.
00:33
179 .3 minus 174 .5 is 4 .8 over 175 .5.
00:42
174 .5.
00:44
And we'll compute everything after.
00:47
I'll just write it out first.
00:49
In miami, you have 198 .5 minus 183 .2.
00:58
Actually, you don't need to write that out.
00:59
That's just going to be 15 .3, right? divided by 183 .2.
01:08
In phoenix, i'll shorten it, phoenix.
01:14
You have 150 .4 minus 145 .4.
01:16
That's 5 over 145 .4.
01:22
In dallas, we have 148.
01:29
Minus 136 .8, that's 12 over 136 .8.
01:36
And then in san francisco, we have 211 .5 minus 192 .5.
01:41
That's 192 .5.
01:46
Okay.
01:48
Now let's divide and figure out each of these inflation rates.
01:52
So first is new york, 4 .8 divided by 174 .5...