Question

Use the stem & leaf plot to determine the median time it takes for students to get to school? Minutes to Travel to School Key 3|5 = 35 minutes 1 | 3 3 5 7 8 9 2 | 0 2 3 5 6 6 8 9 3 | 0 1 3 3 3 5 5 8 8 4 | 0 5 5 | 5

Answer 1

Opening the stem and leaf, we have 26 observations

13 13 15 17 18 19 20 22 23 25 26 26 28 29 30 31 33 33 33 35 35 38 38 40 45 55

#	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26
X	13	13	15	17	18	19	20	22	23	25	26	26	28	29	30	31	33	33	33	35	35	38	38	40	45	55

The median will be the average of the n/2 th and the next observations = Average of 13th and 14th observations = (28 + 29) / 2

Median = 57/2 = 28.5