Unit 7 Review

What is the mean for this data set?

• 5

Are there fewer countries that have 40-59 athletes or countries that have 80-99 athletes?

• 40-59 athletes

• 80-99 athletes

How many total students are in the science class?

• 13
• 6
• 27
• 25

How many students scored between 95 and 100?

• 6
• 6
• 9
• 14

Find the median for the set of numbers:

23, 37, 11, 58, 13, 45

• 30

• 23

• 37

• 28

Josh took seven science tests last year. Josh had an average of 77 on the first five tests. The mean of his scores after taking all seven tests was 82. What is the lowest possible score that Josh could have received on the seventh test?

The histogram shows the number of shirts sold at each price. Based on the histogram, which of following statements must be true.

• Exactly 4 shirts sold for 11 dollars

• No shirt sold for 15 dollars

• Most of the shirts sold for less than 14 dollars

• The most expensive shirt sold for 26 dollars

Jalen says that 60% of his teammates are over 70 inches. Is Jalen’s statement correct?

73, 61, 62, 59, 75, 60, 74, 75, 78, 69, 70

• No, because there are 5 players with a height greater than 70 inches and that’s about 55% of the players

• Yes, there are at least 9 players with a height of at least 70 inches and that is 60% of the players.

• No, there is one player with a height of 70 inches and that is 9% of his teammates.

• Yes, because the median height of the ponies is 60 and 60% of the ponies would be taller.

What is the range of the data set below?

• 2

• 5

• 8

• 10

The dot plot below represents the number of dollars in allowance that students receive each week in Mr. Franklin's class. What is the median amount of allowance?

• 5

• 6

• 7.5

• 8