Pisa 2012 Released Items memory stick

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PISA 2012 items for release ENGLISH

FAULTY PLAYERS SCORING 2
QUESTION INTENT:
Description: Interpret statistical information involving uncertainty
Mathematical content area: Uncertainty and data
Context: Occupational
Process: Interpret
Full Credit
Code 1: Adequate explanation for why the tester is not correct.
•
The tester is not correct; 5% of 2000 is 100, but 3% of 6000 is 180. So on
average 180 audio players are sent for repair, which is more than the average of
100 video players sent for repair.
•
The tester is not correct; the fault rate of video players is 5%, which is a little less
than twice as high as the fault rate of audio players. But they make 6000 audio
players, which is three times the number of video players, so the actual number
of audio players sent for repair will be higher.
No Credit
Code 0: Other responses.
Code 9: Missing.

PISA 2012 Released Items
Question 3: FAULTY PLAYERS
PM00EQ03 – 0 1 9

The
Tronics Company
also makes video and audio players. At the end of the daily
production runs, the
Tronics Company’s
players are tested and those with faults are
removed and sent for repair.
The tables below compare the average number of players of each type that are made
per day, and the average percentage of faulty players per day, for the two
companies.
Company
Average number of video
players made per day
Average percentage of
faulty players per day
Electrix Company
2000
5%
Tronics Company
7000
4%
Company
Average number of audio
players made per day

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