AP Statistics Review

What is the slope of the LSRL from this printout?

• 0.74
• -0.47
• 1.098
• 23.59

The table shown is comparing a person's foot length to their height in cm. Calculate the regression equation

• yhat = 25.05x + 5.57
• yhat = 5.57x + 25.05
• yhat = -5.57x + 25.05
• yhat = 5.57x - 25.05

Which is the best CONTEXTUAL description of the y - intercept for the linear regression equation of the rats: Weight = 100 + 40(Time)?

• The y-intercept is 100, which means the rat is predicted to weigh 100 grams at birth. 
• The y-intercept is 100, which is where the graph crosses the y-axis. 
• 100 is where the data starts on the y-axis. 
• The y-intercept is 100, which means at a weight of 0, the rat will take 100 seconds.

What is the correlation (r) value?

• .209
• .457
• .13
• .361

How do you calculate a residual?

• Actual y MINUS Predicted y-hat
• Predicted y-hat MINUS Observed y

Describe the correlation in the graph shown.

• Strong Negative
• Strong Positive
• Weak Negative
• Weak Positive

According to the 1.5 x IQR rule, how many outliers are there in the data set 72, 110, 114, 115, 118, 123, 144, 156?

• None
• One
• Two
• Three

The histogram shows the typical travel time to school (self-reported) for 50 high school students. Which of the following statements is true about the mean and median of this distribution?

• Mean > Median
• Mean < Median
• Mean = Median
• Mean ≈ Median

Which class has the higher test score median? 

• Class #1
• Class # 2 
• The medians are equal
• The median is not shown here. 

Suppose we roll a fair die four times. The probability that a 6 occurs on exactly one of the rolls is

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