Section 2.2 Learning Check||Please enter your Full Name:|Your Email Address:|Your ID Number or Password:|Consider the followinscatter plot.

The approximate value of the correlation is # 1.00 %% 0.70 %% 0.00 %% -0.60 %%|Consider the following scatter plot.

We may conclude that # the correlation between X and Y must be close to -1 since there is nearly a perfect relation between them. %% the correlation between X and Y must be close to 1 since there is nearly a perfect relation between them. %% the correlation between X and Y is close to 0. %% the correlation between X and Y will be negative but not close to -1 since the relation is not linear. %%|Which of the following is tru of the correlation coefficient r? # It is a resistant measure of association. %% It is always between -1 and 1 (-1 and 1 included). %% If r is the correlation between X and Y, then -r is the correlation between Y and X. %% all of the above. %%|In the following scatter plot the data were classified as either type 1(red) or of type 2(blue).

The overall correlation of the data in this scatter plot is # positive. %% negative, since red and blue dots shows a negative association. %% near 0. %% impossible to compute for such a data set. %%