# Question 4 AP STATISTICS 2011 SCORING GUIDELINES (Form B)

N/A
N/A
Protected

Share "Question 4 AP STATISTICS 2011 SCORING GUIDELINES (Form B)"

Copied!
7
0
0

Full text

(1)

0

a

0

(2)

(3)

(4)

(5)
(6)

(7)

## 2011 SCORING COMMENTARY (Form B)

### incorrect, the response earned a score of 2.

References

Related documents

The response in part (c) begins with the correct answer (“Yes”) to the question and follows with the correct, but unnecessary, statement that if the probability of an upgrade is

Essentially correct (E) if the response notes that 0.45 is not in the 99 percent confidence interval AND states that this is evidence against the belief that 45 percent

Part (a) of this response includes comparative statements, in context, involving all three rivers for center, spread and shape; thus part (a) was scored as essentially correct.

The primary goals of this question were to assess students’ ability to (1) describe a simple random sampling procedure; (2) identify an effective stratification variable; (3) provide

Essentially correct (E) if the number of trials, n, and the binomial probability of a success p for Y (the number of correct guesses) are used to find the expected value of Y, E( )

Essentially correct (E) if the response states that the difference between sampling with or without replacement is negligible here because the population size is large relative to

The response shows that the probability of the intersection of the two events “is a college graduate” and “obtains news primarily from the internet” is not equal to the product of

Partially correct (P) if the response either correctly calculates averages of residual values both for houses with pools and houses without pools but does not correctly report