Central Tendencies

What is the definition of "mean"?

• the difference between the greatest and smallest value in a set of data

• the average of a set of data

• the number that appears the most in a set of data

• the number in the middle of a set of data

What is the definition of "range"?

• the difference between the greatest and smallest value in a set of data

• the average of a set of data

• the number that appears most in a set of data

• the number in the middle of a set of data

What is the definition of "mode"?

• the difference between the greatest and smallest value in a set of data

• the average of a set of data

• the number in the middle of a set of data

• the number that appears the most in a set of data

What is the definition of "median"?

• the average of a set of data

• the number that appears the most in a set of data

• the number in the middle of a set of data

• the difference between the greatest and smallest value in a set of data

Dr. Dre is a dentist. He needs to report on the average number of cavities that his patients have.
1, 0, 1, 5, 0, 3, 4.  What is the average number of cavities?

• 14
• 2
• 7
• 1

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

• 193
• 127
• 60
• 66

A data set can have more than one median?

• True
• False

A data set can have more than one mode

• True
• False

The mode score on the 6th grade math test was 94! Which of these interpretations must be correct?

• 94 was the highest score on the test.
• More students received a 94 than any other score
• No student scored below a 94
• A score of 91 was slightly below average.

How many modes can you have in a data set?

• Zero
• One
• Two
• All the above