Question 1

A golf course is attempting to correlate golfing handicap with math SAT scores among local high school golfers. Ignoring potential confounding variables such as socioeconomic status, the golf course creates the following scatterplot.What is the estimated value of r, the correlation coefficient, between these variables?

Options :

A : #0.63

B : #0.10

C : 0.10

D : 0.63

Answer: B

Question 2

The table shows the results of a survey of favorite movie genres.What is the probability of selecting an action and then a comedy respondent if the selection is replaced?

Options :

A : 10.5%

B : 12.5%

C : 68%

D : 75%

Answer: A

Question 3

Variance formula = ?

Options :

A : #(x# # x#)² / (n # 1)

B : #x# / n

C : x#²

D : ##(x# # x#)²

Answer: A

Question 4

Poisson used for:

Options :

A : Rare events per interval

B : Success/failure trials

C : Continuous data

D : Categorical data

Answer: A

Question 5

Independent events: P(A|B) = ?

Options :

A : P(A)

B : P(B)

C : 0

D : P(A) + P(B)

Answer: A

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