Question: The stem-and-leaf display given here shows the final examination scores of students in a sociology course. (Leaf unit 1.0) Stem-and-Leaf Display of Scores 2

The stem-and-leaf display given here shows the final examination scores of students in a sociology course. (Leaf unit  1.0)

Stem-and-Leaf Display of Scores 2 57 3 244 4 1179 5 03368 6 012447 7 223556899 8 00457 9 0036

(a) Find the median score.

(b) Find the quartiles and .

(c) What proportion of the students scored below 70? 80 and over?

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