Probability and Statistics Quiz

Gina uses a spinner with red, yellow, green, and blue colored sections of equal size. She spins the spinner 15 times and gets red 6 times. Is that the result you would expect? Explain your answer.

• Yes, each color should come up 6 times in 15 spins.

• No, each color should come up 1/4 of the time. 6 is not 1/4 of 15

• No, only yellow should come up 6 times.

• No, each color should come up 1/15 of the time.

Tags

CCSS.7.SP.C.6

Troy has a game piece in the shape of a tetrahedron, which has four triangular faces. Each face has one of the letters F, B, L, or R printed on it. Troy tosses the game piece 4 times, and each time it lands with the letter R showing. Is that the result you would expect? Explain your answer.

• Yes, the R is on the largest face.

• No, the L should come up every time.

• No, the R should come up 1/4 of the time.

• No, this isn't a real game piece.

Troy tosses a tetrahedron (a figure with 4 triangular faces) with letters F, B, L, and R 16 times. How many times would you expect to see R for these 16 tosses?

• 4 times

• 8 times

• 2 times

• 12 times

Tags

CCSS.7.SP.C.6

A hockey team scores more than 4 points per game in 1 out of every 3 games they play. If you make a prediction about how many times the hockey team will score more than 4 points in the next 10 games, are you using theoretical or experimental probability?

• Theoretical

• Experimental

Is it more likely to get an experimental probability of 0 for the event heads when flipping a coin once or when flipping the coin 100 times?

• 100 times - it's been done before.

• 100 times - the tail's side is lighter than the head's side.

• Once - the tail's side is lighter than the head's side.

• Once - only one side will come up and it might not be heads.

Trevor has a bag of counters with 26 red counters and 26 blue counters. He randomly picks a counter, records the color, places it back in the bag, and mixes the counters in the bag. The first 5 times he picks a counter, it is red. He thinks the next counter he picks has a greater probability of being blue than red. Is Trevor correct? Explain.

• Yes. He's already used up too many chances of getting red.

• No. Red will just keep coming up.

• Yes, the probability of getting blue is less than the probability of getting red.

• No. Both have a 50% chance of showing up on each draw.

Tags

CCSS.HSS.CP.A.5

Anish is playing a video game where he pushes a button to stop a spinning wheel. Each time he presses the button, the theoretical probability of scoring 0 points is 1/5, the theoretical probability of scoring 10 points is 3/5, and the theoretical probability of scoring 20 points is 1/5. How many times would you expect Anish to score 10 points if he presses the button 10 times?

• All 10 times. He's a beast at this game!

• 6 times

• Only once.

• 3 times.

Tags

CCSS.7.SP.C.6

You spin the spinner 25 times. Here are your results:

Green-7

Blue-5

Red-9

Yellow-4

What is the experimental probability of landing on blue?

• 1/3

• 1/5

• 4/25

• 3/11

Tags

CCSS.7.SP.C.6

Experimental Probability is:

• What Will happen 
• What actually happens
• What should happen
• What I think Happens

Experimental Probability is ______

• data from our experiment

• our prediction