Exploring Measures of Central Tendency in Statistics

A class of 30 students took a math test. The scores were: 85, 90, 78, 88, 92, 75, 84, 91, 87, 80, 95, 89, 82, 76, 93, 81, 86, 94, 77, 79, 83, 88, 90, 92, 85, 87, 78, 91, 84, 89. What is the mean score of the class?

• 84.50

• 85.33

• 88.25

• 90.00

In a survey, 50 students were asked how many books they read last month. The results were: 0, 1, 2, 3, 4, 5, 0, 2, 3, 1, 4, 0, 2, 3, 5, 1, 2, 4, 0, 3, 2, 1, 5, 4, 3, 2, 1, 0, 2, 3, 4, 5, 1, 0, 2, 3, 4, 5, 1, 2, 3, 4, 0, 1, 2, 3, 4, 5, 1, 0. What is the mode of the data set?

• 1 and 4

• 0 and 5

• 3 and 4

• 2 and 3

A gardener recorded the heights (in cm) of 10 plants over a month: 15, 18, 20, 22, 19, 21, 20, 18, 17, 22. What is the median height of the plants?

• 19.5

• 21.5

• 18.5

• 20

During a basketball season, a player scored the following points in 10 games: 12, 15, 20, 18, 22, 15, 10, 25, 30, 20. What is the range of the points scored?

• 25

• 15

• 20

• 30

A teacher collected data on the number of hours students spent on homework last week: 2, 3, 4, 2, 5, 3, 4, 2, 6, 3. What is the average number of hours spent on homework?

• 4.0

• 5.5

• 3.4

• 2.5

In a pet store, the weights (in kg) of 8 puppies were recorded: 3, 4, 5, 3, 6, 4, 5, 3. What is the mode of the weights?

• 6

• 4

• 3

• 5

A family recorded the number of hours they watched TV each week for 5 weeks: 10, 12, 8, 15, 10. What is the mean number of hours watched?

• 14

• 13

• 11

• 9

A student recorded the number of steps taken each day for a week: 5000, 7000, 6000, 8000, 9000, 10000, 11000. What is the median number of steps taken?

• 8000

• 9000

• 7000

• 10000

In a science experiment, the temperatures (in degrees Celsius) recorded over a week were: 22, 24, 23, 25, 22, 24, 26. What is the mean temperature for the week?

• 23.71

• 25.5

• 22.5

• 24.5

A group of friends went to the movies and recorded their ages: 12, 13, 12, 14, 15, 12, 13, 14. What is the mode of their ages?

• 13

• 12

• 14

• 15