To estimate the median age of all students attending her university, a statistic

Question

To estimate the median age of all students attending her university, a statistician selected a simple random sample of 21 students. Prior to going on vacation, the statistician was only able to collect data from 19 of those 21 students. The median age of the 19 students was 28 years. The last two students were 20 and 31 years of age, respectively. Based on this information, which of the following best describes the median age of all 21 students in the sample? (2 points) (A)27.7619 (B) 28 (C) less than 28 (D) more than 28 (E) Cannot be determined from the information provided

Explanation / Answer

Lets suppose this is the data of 19 students

median=28

add 20 and 31

median=30

ANSWER IS MORE THAN 28

OPTIOND

x 12 13 14 15 16 17 18 19 28 30 32 32 33 34 35 36 37 38 39

median=28

add 20 and 31

x 12 13 14 15 16 17 18 19 20 28 30 31 32 32 33 34 35 36 37 38 39

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