Statistics Probability Rules

Define the term 'mode' in statistics.

• The mode is the highest value in a data set

• The mode is the middle value in a data set

• The mode is the average of a data set

• The mode in statistics refers to the value that appears most frequently in a data set.

Emma is playing a spinning game using the spinner shown. She gets one spin and needs green to win. What's probability that she will NOT win?

• .25

• .75

• .70

• 40

Which of the following describes theoretical probability?

•   Perform an experiment to determine the probability

•       Determining the expected probability of an event

• Perform a simulation and count the number of possible outcomes

• Use trials to count the number of desired outcomes

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

• 5/11

• 5/6

• 1/3

• 5

Find the theoretical probability of NOT landing on yellow if you spin the spinner.

• 1/8

• 7/8

• 1

• 7

• A

• B

• C

• D

as the number of trials in an experiment increases, the experimental probability of an event approaches the theoretical probability of the same event, meaning the difference between the experimental and theoretical probability will be closer to zero 

• fundamental counting principal 

• independent event

• inference

• law of large numbers

How many people went to the amusement park fewer than 3 times?

• 1

• 2

• 10

• 8

A bag has 4 green marbles, 3 red, 2 blue and 1 yellow. What is the theoretical probability of pulling a red?

• 3/10

• 3/6

• 1/9

• 1/3

The Probability Line above shows all possible probabilities, from 0% to 100%.

What is the probability shown with the red arrow?

• 0%

• 50%

• 75%

• 100%