16Hit1600
Information and IdeasVery hardReading a table of marks with a comparison class

Information and Ideas practice question

Average mark in two classes Class | Start of year | End of year 1 (new textbook) | 61 | 70 2 (old textbook) | 60 | 68 A teacher argues that the new textbook ____

Which choice most effectively uses data from the table to complete the statement?

  1. A. may explain little of the improvement, since Class 1's gain of 9 points is only slightly larger than the 8 points gained by Class 2 with the old book.Correct
  2. B. raised Class 1's average to 70.
  3. C. produced a gain of 9 points.
  4. D. should be adopted by Class 2.

Answer: A. may explain little of the improvement, since Class 1's gain of 9 points is only slightly larger than the 8 points gained by Class 2 with the old book.

Nine against eight.

Why the other answers are wrong

B. raised Class 1's average to 70.
Ignores the comparison class.
C. produced a gain of 9 points.
Ignores the comparison class.
D. should be adopted by Class 2.
A recommendation the data barely support.

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