stats and time review

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

• 193

• 127

• 60

• 66

Find the mean of these numbers:
5,11,2,12,4,2

• 4.1

• 6

• 4.5

• 4

Find the median of these numbers:
4,2,7,4,3

• 2

• 5

• 7

• 4

Find the mean of these numbers:
2, 57, 38, 42, 6

• 29

• 38

• 50

• 145

What is the range?

• average

• biggest-smallest

• the middle #

• # happening the most

Dr. Dre is a dentist. He needs to report on the average number of cavities that his patients have.
1,0,1,5,6,3,4

• 3.33

• 2.85

• 3

• 3.5

In order to find the median, the data must be sorted from least to greatest first.

• True

• False

To find the _________ you add up all the numbers and then divide by how many numbers you have.

• Mean

• Median

• Mode

• Range

To find the ________ you put all numbers in order from least to greatest and find the number that is in the middle.

• Mean

• Median

• Mode

• Range

If you go to bed at 9:15 pm and you wake up for school at 6:15 am, how much sleep do you get at night?

• 7 hours

• 8 hours

• 9 hours

• 10 hours