1a.This graph shows the scatterplot of the heights and weights of female tennis

Question

1a.This graph shows the scatterplot of the heights and weights of female tennis players. The red lines are drawn through the average height and weight. Which two of the following statements are most likely true?

Select one or more:

a. Point B is an outlier that reduces the amount of correlation

b. The correlation coefficient is -0.70

c. The correlation coefficient is +0.72

d. The correlation coefficient is about 0.03

e. Point A is an outlier that reduces the amount of correlation

1b. The following scatterplot shows the association between the height of a student's father(x) and the height of a student(y). (Heights are in inches)

In this case, =68 and =68.

Which one or more of the statements that follows applies to this scatterplot?

Select one or more:

a. The relationship appears to be weakly positive

b. There are several outliers that would appear to influence the relationship.

c. The outlier such as at the point (78,78) would most likely not influence the relationship because it appears to lie in a straight line.

d. The relationship appears to be very, very strong

e. The relationship is curved

Explanation / Answer

Question 1a

Answer is C &E

C.the correlation coefficient is +0.72.

E. Point A is an outlier that reduces the amount of correlation.

Question 1b.

Answer is C

C.the outlier such that (78,78) would most likely not influence the relationship because it appears to lie in a straight line.

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