GMAT Data Sufficiency

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Source: OG13th

Level: 5

4, 6, 8, 10, 12, 14, 16, 18, 20, 22

List M (not shown) consists of 8 different integers each of which is in the list shown. What is the standard deviation of the numbers in list M ?

(1) The average (arithmetic mean) of the numbers in list M is equal to the average of the numbers in the list shown.

(2) List M does not contain 22.

  • A Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  • B Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  • C BOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
  • D EACH statement ALONE is sufficient.
  • E Statements (1) and (2) TOGETHER are NOT sufficient.

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