Theoretical and Experimental Probability

What is the theoretical probability of the spinner landing on yellow?

• 1/4

• 1/2

• 1/3

• 2/3

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

What is the theoretical probability of randomly picking a Purple marble from Molly's Sack of Marbles?

• 4/5

• 3/15

• 2/15

• 8/21

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

Experimental Probability is...

• what will happen 
• what actually happens
• what should happen
• what I think happens

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

Theoretical Probability is...

• what is expected to happen

• what does happen

• what will happen

• what I want to happen

Shannon has a bag of jelly beans.

5 Green

2 Red

3 Blue

What is the experimental probability of her selecting a red jelly bean? (In simplest form)

• 1/4

• 2/10

• 1/5

• 23/30

Shannon has a bag of jelly beans.

5 Green

2 Red

3 Blue

What is the theoretical probability of her selecting a red jelly bean? (In simplest form)

• 11/33

• 2/10

• 1/5

• 23/30

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

Jason rolls a die 14 times. What is the Experimental probability that he will roll a 2 ?

• 2/6

• 3/6

• 3/14

• 1/6

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.SP.C.7

Jason roll a die 14 times. What is the theoretical probability that he will roll a 1 or 6?

• 2/6

• 6/12

• 6/14

• 7/14

Tags

CCSS.7.SP.C.5

Choose the statement that is true about the experimental and theoretical probability of rolling a number cube 20 times.

• The experimental probability of rolling 3 is 16.6% and the theoretical probability is 15%

• The experimental probability of rolling 3 is 15% and the theoretical probability is 16.6%

• The experimental probability of rolling 1 is greater than the theoretical probability

• The experimental probability of rolling 6 is 16.6% and the theoretical probability of rolling 6 is 25%

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.SP.C.7

A scientist is testing a six-sided die to see if it is fair. Theoretically, each face should appear 1/6 of the time. However, after rolling the die 10 times, the number 6 appears 4 times, which is much higher than expected. The scientist is concerned that the die may be biased.

What is the most likely reason for this discrepancy?

• The die is definitely biased and unfair.

• There were not enough trials to expect the theoretical probability to match the experimental probability.

• The die is weighted toward rolling a 6.

• The theoretical probability is incorrect.