Question

answer the questions that follow. the same response may be the correct answer for more than one question.

1. which data - set shows the least evidence of a linear relationship?
2. for which data - set does the correlation coefficient r appear to be equal to 1?
3. for which data - set is the correlation coefficient r closest

Explanation:

Step1: Analyze linear - relationship appearance

A linear relationship in a scatter - plot is indicated by points that roughly form a straight line. Figure 1 has points that are very scattered and do not form any discernible straight - line pattern, so it shows the least evidence of a linear relationship.

Step2: Understand correlation coefficient r = 1

A correlation coefficient r = 1 indicates a perfect positive linear relationship. In Figure 3, the points lie almost exactly on an upward - sloping straight line, suggesting r is close to 1.

Answer:

1. The data set in Figure 1
2. The data set in Figure 3