Simple Probability Practice 22_23

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is the formula for calculating the probability of an event?

Back

Probability (P) = Number of favorable outcomes / Total number of possible outcomes.

Front

What is experimental probability?

Back

Experimental probability is the probability determined by conducting an experiment and observing the outcomes.

Front

What is the complement of an event?

Back

The complement of an event is the probability that the event does not occur, calculated as 1 - P(event).

Front

If the probability of an event A is 0.3, what is P(not A)?

Back

P(not A) = 1 - P(A) = 1 - 0.3 = 0.7.

Front

How do you find the probability of multiple events occurring?

Back

For independent events, multiply their probabilities: P(A and B) = P(A) * P(B).

Front

What is the probability of picking a red marble from a jar with 2 pink, 6 red, and 4 blue marbles?

Back

P(red) = Number of red marbles / Total marbles = 6 / (2 + 6 + 4) = 6/12 = 1/2.

Front

What is the probability of picking a red or blue marble from a jar with 2 pink, 6 red, and 4 blue marbles?

Back

P(red or blue) = (Number of red + Number of blue) / Total marbles = (6 + 4) / 12 = 10/12 = 5/6.

Front

What is a bar graph?

Back

A bar graph is a visual representation of data using bars of different heights to show the frequency of different categories.

Front

How do you calculate the probability of landing on a specific outcome in a spinner?

Back

P(outcome) = Number of times the outcome occurs / Total spins.