Intro to Probability Practice

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

The probability of an event A is calculated as: P(A) = Number of favorable outcomes / Total number of outcomes.

Front

What is experimental probability?

Back

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

Front

What is theoretical probability?

Back

Theoretical probability is the probability calculated based on the possible outcomes in a perfect scenario, without conducting an experiment.

Front

How do you calculate the probability of multiple independent events occurring?

Back

For independent events A and B, the probability of both occurring is: P(A and B) = P(A) * P(B).

Front

What is the probability of rolling an even number on a fair die?

Back

There are 3 even numbers (2, 4, 6) on a die. Thus, P(even) = 3/6 = 1/2.

Front

What is the probability of drawing a red card from a standard deck of cards?

Back

There are 26 red cards in a standard deck of 52 cards. Thus, P(red) = 26/52 = 1/2.

Front

What is the probability of getting a letter that is not A from the letters A, B, C, D, E, F, G?

Back

There are 6 letters that are not A. Thus, P(not A) = 6/7.

Front

What is the probability of spinning an even number on a spinner with numbers 10, 20, 30, 40, 50, 60, 70, 80?

Back

All numbers are even. Thus, P(even) = 8/8 = 1.

Front

How do you calculate the probability of drawing a red or black pen from a box containing 3 black pens, 7 blue pens, and 5 red pens?

Back

Total pens = 15. Red or black pens = 8. Thus, P(red or black) = 8/15.