00:01
In this question, we were asked to choose the correct words to describe the scatter plot shown here.
00:07
So the scatter plot shows for a number of observations, the value of the observation's x value and its y value.
00:16
So, for example, if we consider this observation here, for the x variable, it's 80, and for the y variable, it's something just a little bit above 80, maybe 85 or 82.
00:29
And if we look at the scatterplot, we can see an overall pattern, which is called the form of the relationship.
00:36
And it looks like a linear form.
00:39
Basically, you could draw a straight line through here, and that line would sort of represent the overall pattern of the scatterplot.
00:49
It appears to be a line.
00:50
It doesn't seem like it's some shape that curves like this or curves like this.
00:55
There's no reason to say that this is not linear.
00:58
So for the form of the relationship, we would pick linear.
01:02
For the strength of the relationship, if the relationship was very strong, then all the points plotted in the graph would be relatively close to the line.
01:13
So they would form a pretty convincing line pattern.
01:17
Maybe like these blue dots i'm showing here, that'd be a very strong linear relationship.
01:22
And if the relationship is weak, then the points can vary quite a bit away from the line as they do in this particular.
01:29
Plot and moderate would be something in between those two extremes.
01:35
I would refer to this as a weak relationship.
01:41
And that's because say we pick some value for x, let's say 80, the y values can range from approximately 80 all the way up to almost 150...