8th Grade DP Benchmarks Review

Temperature Number of bottles

of day (° F) of water sold

20 15

30 10

40 20

40 25

55 30

75 35

80 35

80 40

95 50

100 45

Using the data above, graph an appropriate representation (i.e., line graph or scatter plot). (8.DP.1.1)

The table shows the number of tickets purchased at a carnival over an 8-day period. What type of graph is an appropriate representation of the data? (8.DP.1.1)

• A line graph because you are looking at how the data changes over time.

• A line graph because you are interested if there is a relationship between two variables.

• A scatter plot because you are interested if there is a relationship between two variables.

• A scatter plot because you are looking at how the data changes over time.

The scatter plot shows the number of visitors at an art show in relation to the admission price.

Select all that applies to the association of the data in the scatter plot. (8.DP.1.2)

• The scatter plot shows a linear association.

• The scatter plot shows a nonlinear association.

• A positive association exists between the admission price and the number of visitors.

• A negative association exists between the admission price and the number of visitors.

• No association exists between the admission price and the number of visitors.

Which type of association does the scatter plot show? (8.DP.1.2)

• a positive association

• a negative association

• a linear association

• a nonlinear association

Which trend line is the best model of the data? (8.DP.1.3)

• 
• 
• 
• 

The scatter plot shows the relationship between the number of pretzels sold and the revenue, in dollars. Draw a trend line for the scatter plot. (8.DP.1.3)

The spinner shown is spun twice. Which outcome is not part of the sample space? (8.DP. 2.1)

• 5, 5

• 3, 6

• 4, 2

• 1, 3

A fair coin is flipped and a blue or red marble is picked from a bag.

Which shows the sample space? (8.DP.2.1)

• {(H, B), (H, B), (T, R), (T, R)}
  

• {(H, R), (H, R), (H, R), (H, R)}
  

• {(T, R), (T, R), (T, R), (T, R)}

• {(H, B), (H, R), (T, B), (T, R)}
  

A standard deck of cards has four suits: heart (H), diamond (D), club (C), and spade (S).

A card is picked randomly and replaced. Then another card is picked from the deck.

The organized list shows the possible outcomes.

What is the probability of picking two hearts? (8.DP.2.2)

The table shows the possible outcomes of spinning a spinner twice, where there are 5 equal sections

labeled 1–5. What is the probability of spinning two different numbers? (8.DP.2.2)