WORKSHEET ON MEAN AND MEDIAN

Find the mean of the given data

1)  12.45, 12.99, 10.50, 11.25, 9.99, 12.72

2)  28.8, 32.9, 32.5, 27.9, 30.4, 32.5, 31.6, 32.7

3)  Four girls leaving a mall were asked how much money they had just spent. The amounts were $0, $14.95, $35.25, and $25.16. Find the mean amount of money spent.

4)  Juan bought 5 shirts to wear to his new job. The costs of the shirts were $32.95, $38.50, $30.00, $17.45, and $24.25. Find the mean cost.

5)  The number of minutes it took Jim to ride his bike to school for each of the past six days was 21, 18, 16, 19, 24 and 19. Find the mean number of minutes.

6)  Norris bought six books for his classes this semester. The costs of the books were $74.28, $120.95, $52.40, $10.59, $35.89, and $59.24. Find the mean cost.

7)  The top eight hitters in a softball league have batting averages of .373, .360, .321, 321, .320, .312, .311, and .311. Find the mean of the batting averages. Round your answer to the nearest thousandth. 

8)  The monthly snowfall at a ski resort over a six-month period was 60.3, 79.7, 50.9, 28.0, 47.4, and 46.1 inches. Find the mean snowfall.

Solution

Answers :

Find the median of the given data

1)  121, 115, 135, 109, 136, 147, 127, 119, 110

2)  4, 8, 1, 5, 14, 3, 1, 12

3)  3, 9, 2, 6, 20, 3, 3, 10

4)  99.2, 101.9, 98.6, 99.5, 100.8, 99.8

5)  28.8, 32.9, 32.5, 27.9, 30.4, 32.5, 31.6, 32.7

6)  Last week ray recorded how much he spent for lunch each workday. He spent $6.50, $7.25, $4.90, $5.30, and $12.00. Find the median.

7)  Michaela is in charge of 6 two year olds at a day care centre. Their ages, in months, are 25, 24, 28, 32, 29, and 31. Find the median age.

8)  Brian is teaching a swim class for 6 three-year olds. Their ages, in months, are 38, 41, 45, 36, 40, and 42. Find the median age.

9)  Sal recorded the amount he spent for gas each week for the past 8 weeks. The amounts were past 8 weeks. The amounts were $38.65, $32.18, $40.23, $51.50, $43.68, $30.96, $41.37, and $44.72. Find the median amount.

Solution

Answers :

Find the median for ungrouped data

1)  2, 5, 1, 5, 2, 1, 2, 3, 2, 3, 1

2)  8, 5, 1, 3, 7, 1, 1, 7, 1, 8, 7

3)  18, 22, 17, 20, 19, 20, 22, 19, 29, 18, 23, 25, 22, 24, 23, 22, 18, 20, 22, 20

4)  42, 28, 32, 35, 24, 32, 48, 32, 32, 24, 35, 28, 30, 35, 45, 32, 28, 32, 42, 42, 30

5)  The number of children per house on one block:

1, 4, 2, 3, 3, 2, 6, 2, 4, 2, 0, 3, 0.

6)  The number of movies watched each month last year: 2, 0, 3, 0, 0, 8, 6, 5, 0, 1, 2, 3

7)  The number of units being taken by students in one class: 12, 5, 11, 10, 10, 11, 5, 11, 11, 11, 10, 12.

8)  The number of hours of sleep per night for the past two weeks: 8, 5, 7, 8, 8, 6, 6, 6, 6, 9, 7, 8, 8, 8.

Solution

Answers :