Data Analysis and Statistics

What are the measures of center?

• mean

• mode

• median

• all choices

(a)  

• A

• B

• C

• D

A store sells loaves of bread. The table below shows the number of loaves of bread sold each day for a week. What is the difference between the mean and median number of loaves of bread sold?

• 8

• 12

• 19

• 25

How many more people liked goldfish than snakes?

• 6

• 3

• 5

• 4

Ms. Moss did a survey of her class about how many books they read over the summer. Using the dot plot, identify the correct statements.

• More of her students have read more than 4 books than the number of students who read less than 3 books.

• Ms. Moss surveyed 20 students.

• Half of the students have read more than 1 book.

• Most of the students have read at least 1 book.

Greg randomly surveyed 25 students in his school to see if they had ever had an overdue library book. The results are shown in the table. According to the sample, about what percent of the students in the school district have had an overdue library book?

(a)  

What is the median?

• 62

• 58

• 66

• 60

Which pet was chosen by 6 people?

• Cat

• Goldfish

• Hamster

• Snake

A value that lies outside most of the other values in a set of data. This could mean it is much smaller or much larger than the other values.

• Variance

• Frequency

• Outlier

• Central Tendency

• Range