Gr 8 Unit 8 Statistical Reasoning Practice Test

Two coins are flipped at the same time.

• Independent Events

• Dependent Events

A card is selected from a deck and not put back in the deck. Then a coin is flipped.

• Independent Events

• Dependent Events

A sock is chosen from a basket of clothes and not replaced. Another sock is chosen.

• Independent Events

• Dependent Events

A candy is chosen from a dish and eaten. Then another candy is chosen from the dish.

• Independent Events

• Dependent Events

A card is selected from a deck and not put back into the deck. Another card is selected from the deck.

• Independent Events

• Dependent Events

A marble is selected from a bag and placed back into the bag. A second marble is selected from the same bag.

• Independent Events

• Dependent Events

Julio is playing a game where he earns points for predicting what color marble pops out of the machine next. The marbles are not returned after they pop out of the machine. Right now there are 2 red marbles, 3 blue marbles, 3 green marbles and 4 yellow marbles.

Julio is debating if he should predict that the next two marbles are both yellow OR if the first will be a yellow and the second will be a blue marble. Which pair of events has the higher probability?

• The next two marbles has a higher probability.

• The first marble being yellow and the second marble being blue has the higher probability.

• The two events have the same probability

• Both of these events are impossible in the given situation.

A game uses 10 cards.

2/5 are Red

30% are Blue

0.3 are Green

What is the probability that you will draw a red card, put it back and then draw a blue card?

• 9%

• 9/100

• 3/5

• 12%

A box contains 7 new light bulbs and 3 used lightbulbs. What is the probability that you choose a used light bulb, put it back, and then select a new light bulb?

• 10%

• 0.35

• 70%

• 3/10

Which boxplot shows the following data:

64, 92, 60, 80, 82, 79, 86, 87, 84, 65, 98, 91, 99

• A

• B

• C

• D