Below are four bivariate data sets and the scatter plot for

Below are four bivariate data sets and the scatter plot for each. (Note that each scatter plot is displayed on the same scale.) Each data set is made up of sample values drawn from a population.

Solution

1. None. None of them are perfectly linear with a negative slope.

2.The UV data set, as you can see, it has a trend, but it may not be linear.

3. The UV data set as well. As you can see, the trend rises from left to right.(positive slope)

4.The WT data set. As you can see, it has positive slope, (rises from left to right), and is almost perfectly a line.