1. The main things to look for in scatterplots include all of the below except:

a. Direction

b. Form

c. Strength

d. Negative values

1. The slope gets its sign from the ______________.

a. covariance

b. r-squared

c. correlation

d. standard deviation

1. Least square lines are commonly called

a. Regression lines

b. Linear lines

c. Statistical lines

2. All of the following are conditions to check prior to regression except:

a. Quantitative Variable Condition

b. Linearity Condition

c. Outlier Condition

d. Overall Condition

1. Correlation treats x and y

a. Symmetrically

b. Non-Symmetrically

c. As outliers

d. Cannot be determined

1. An R-squared of 0.578 for the weight of a Samsung TV indicates

a. 57.8% of the variation in the weight of a Samsung TV is accounted for by some independent variable

b. 42.2% of the variation in the weight of a Samsung TV is accounted for by some independent variable

c. Cannot be determined

2. How big should R-squared be to determine a good regression?

a. 80%

b. 50%

c. 30%

d. There is no value of R-squared that automatically determines a regression is good