Math A Component Retest

April 2004

Component 6, Module 2

Key to Multiple-Choice Questions

(1)	3
(2)	1
(3)	4
(4)	3
(5)	1
(6)	2

Rubrics

(7)

[ 4 ] and appropriate work is shown, such as 2y + y + 6 + y = 26 or trial and error with at least three trials and appropriate checks.

[ 3 ] One computational error is made in finding the number of marbles, but an appropriate probability is found.

or

[ 3 ] The correct number of each color marble is found, and appropriate work is shown, but the probability of selecting a yellow marble, or the probability of selecting a purple marble, is given as the answer.

[ 2 ] Two or more computational errors are made in finding the number of marbles, but an appropriate probability is found.

or

[ 2 ] The number of green marbles is found correctly with appropriate work shown, but the probability is not found.

or

[ 2 ] and the trial-and-error method is used to find the correct number of marbles, but only two trials with appropriate checks are shown.

or

[ 2 ] The trial-and-error method is attempted and at least six systematic trials and appropriate checks are shown, but the solution is not found.

[ 1 ] A correct equation is written, but no further correct work is shown.

or

[ 1 ] P(green) = but no other correct work is shown.

or

[ 1 ] but no work is shown or only one trial with appropriate check is used to find the correct number of marbles.

[ 0 ] A zero response is completely incorrect, irrelevant, or incoherent or is a correct response that was obtained by an obviously incorrect procedure.

(8)

[ 4 ] or an equivalent answer, and appropriate work is shown, such as

[ 3 ] Appropriate work is shown, but one computational error is made.

[ 2 ] Appropriate work is shown, but two or more computational errors are made.

or

[ 2 ] Appropriate work is shown, but one conceptual error is made, such as adding and

or

[ 2 ] One of the probabilities is incorrect, but the appropriate product is shown.

or

[ 2 ] The correct probabilities are determined, but the product is not found.

[ 1 ] One of the probabilities is correct, but no further correct work is shown.

or

[ 1 ] Both probabilities are incorrect, but the appropriate product is found.

or

[ 1 ] , but no work is shown.

[ 0 ] A zero response is completely incorrect, irrelevant, or incoherent or is a correct response that was obtained by an obviously incorrect procedure.

(9)

[ 4 ] or an equivalent answer, and appropriate work is shown, such as adding
P(C,C) = P(N,N) = and P(S,S) =

[ 3 ] Appropriate work is shown, but one computational error is made.

[ 2 ] Appropriate work is shown, but two or more computational errors are made.

or

[ 2 ] Appropriate work is shown, but one conceptual error is made, such as calculating the probability with replacement,

or

[ 2 ] All three probabilities are calculated correctly, but they are not added.

or

[ 2 ] One of the probabilities is set up incorrectly, but all three are added appropriately.

or

[ 2 ] All three probabilities are calculated correctly, but they are multiplied.

[ 1 ] Appropriate work is shown, but one conceptual error and one computational error are made.

or

[ 1 ] The probabilities are set up incorrectly, but they are added appropriately.

or

[ 1 ] One probability is calculated correctly, but no further correct work is shown.

or

[ 1 ] or an equivalent answer, but no work is shown.

[ 0 ] A zero response is completely incorrect, irrelevant, or incoherent or is a correct response that was obtained by an obviously incorrect procedure.