WEBVTT
X-TIMESTAMP-MAP=MPEGTS:900000,LOCAL:00:00:00.000
2
00:00:05.700 --> 00:00:09.210
This question is about
data identification.
3
00:00:09.210 --> 00:00:14.510
On this scatter plot, you have
the x-axis from 0 to 1, which
4
00:00:14.510 --> 00:00:17.570
is given by the
column of values x.
5
00:00:17.570 --> 00:00:21.090
And then the three
data sets A, B, and C,
6
00:00:21.090 --> 00:00:24.450
which are represented by
the squares, the diamonds,
7
00:00:24.450 --> 00:00:28.460
and the triangles
on the scatter plot.
8
00:00:28.460 --> 00:00:30.440
It can be very
difficult to work out
9
00:00:30.440 --> 00:00:33.670
which data set relates
to what set of points
10
00:00:33.670 --> 00:00:37.510
because the scatter plot itself
is quite confusing to look at.
11
00:00:37.510 --> 00:00:41.710
However, if you look at the
first set of data points,
12
00:00:41.710 --> 00:00:43.790
these correspond
to the data points
13
00:00:43.790 --> 00:00:45.960
at the lowest value of x.
14
00:00:45.960 --> 00:00:48.190
Looking down the
column, the lowest value
15
00:00:48.190 --> 00:00:49.900
of x in the data
points are here.
17
00:00:52.648 --> 00:00:56.150
And so these set of
numbers, A, B, and C,
18
00:00:56.150 --> 00:00:59.820
must relate to the triangle,
the square, and the diamond.
19
00:00:59.820 --> 00:01:01.720
The triangle is
the highest point,
20
00:01:01.720 --> 00:01:04.680
and the highest value in
the data sets of A, B, and C
21
00:01:04.680 --> 00:01:10.590
is 0.92, which is the value
for B. This roughly corresponds
22
00:01:10.590 --> 00:01:13.080
to where the diamond is as well.
23
00:01:13.080 --> 00:01:15.782
The middle point
is the red square
24
00:01:15.782 --> 00:01:19.660
and the data set that has the
middle value is data set A.
25
00:01:19.660 --> 00:01:24.090
And again, 0.5 people is
roughly where the square is.
26
00:01:24.090 --> 00:01:27.500
Finally, the lowest data
point is the blue diamond.
27
00:01:27.500 --> 00:01:31.670
This is given by data
set C. And again, 0.35
28
00:01:31.670 --> 00:01:33.760
is roughly where the diamond is.
29
00:01:33.760 --> 00:01:38.770
And so data set B are
the green triangles,
30
00:01:38.770 --> 00:01:42.330
data set A are the
red squares, and data
31
00:01:42.330 --> 00:01:45.033
set C are the blue diamonds.