Probability 7th Grade Math

How do you express probability as a percentage?

• Add 50 to the probability

• Multiply the probability by 100

• Divide the probability by 100

• Subtract the probability from 100

What is the difference between theoretical and experimental probability?

• Theoretical probability is based on actual experiments, while experimental probability is based on expected outcomes.

• Theoretical probability is based on the expected outcomes, while experimental probability is based on actual experiments.

• Theoretical probability and experimental probability are the same.

• Theoretical probability is only applicable in theoretical scenarios, while experimental probability is used in practical applications.

What is a tree diagram in probability?

• A visual representation of all possible outcomes of an event, showing the paths to each outcome.

• A method for calculating probabilities using numerical values.

• A type of graph used to display statistical data.

• A diagram that represents the relationships between different variables.

If a company accepts 1 out of every 20 applicants, what is the probability of not being accepted?

• 90%

• 95%

• 85%

• 80%

What is a sample space?

• A sample space is the set of all possible outcomes of a probability experiment.

• A sample space is a collection of all the events that can occur in a probability experiment.

• A sample space is the average of all outcomes in a probability experiment.

• A sample space is a method to calculate the probability of a single event.

What is the complement of an event?

• The probability that the event occurs.

• The probability that the event does not occur, calculated as 1 minus the probability of the event.

• The total probability of all possible outcomes.

• The probability of the event occurring at least once.

What is the total number of outcomes when rolling a six-sided die?

• 4

• 5

• 6

• 7

What is the probability of drawing a gold coin from a bag containing 2 silver coins, 2 gold coins, 6 copper coins, and 5 brass coins?

• 1/5

• 2/15

• 1/3

• 1/10

How do you calculate the probability of an event?

• Probability of an event = (Number of favorable outcomes) / (Total number of outcomes)

• Probability of an event = (Total number of outcomes) / (Number of unfavorable outcomes)

• Probability of an event = (Number of favorable outcomes) + (Total number of outcomes)

• Probability of an event = (Number of unfavorable outcomes) / (Total number of outcomes)

If the probability of an event is 0.25, what is the probability of the event not occurring?

• 0.50

• 0.75

• 0.25

• 0.10