1. Which of the following measures of a linear relationship has set limits of -1 and +1?

Select one:

a.

The slope of a line.

b

The covariance.

cThe coefficient of correlation.

d.

The coefficient of determination.

2. What proportion of the total observations lie to the left of the median?

Select one:

a.

at most 0.50.

b.

Less than 0.50 if the distribution is skewed to the left.

c.

More than 0.50 if the distribution is skewed to the right.

d.

Between 0.25 and 0.60 if the distribution is symmetric and unimodal.