A group of 7 students took a test. In the test, one student scored 100% and 2 students scored 0%. If the median score of

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A group of 7 students took a test. In the test, one student scored 100% and 2 students scored 0%. If the median score of the group is 20%, what is the value of the average (arithmetic mean) score of the group of students?

(1) If the students who scored either 0% or 100% are not considered, the median score of the group improves to 25%

(2) If the students who scored either 0% or 100% are not considered, the range of the scores of the group is 10%

Answer: C

Source: e-GMAT
Source: — Data Sufficiency |