Probability

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.

Tags

CCSS.7.SP.C.5

Front

What is the formula for calculating probability?

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes)

Tags

CCSS.7.SP.C.7A

Front

If a jar contains 2 pink, 6 red, and 4 blue marbles, what is the total number of marbles?

Back

Total marbles = 2 + 6 + 4 = 12.

Tags

CCSS.2.OA.A.1

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

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

Tags

CCSS.HSS.CP.B.7

Front

In a bag with 3 red, 4 blue, 2 green, and 6 clear marbles, what is the probability of pulling a green marble?

Back

Probability = Number of green marbles / Total marbles = 2 / (3 + 4 + 2 + 6) = 2/15.

Tags

CCSS.7.SP.C.7B

Front

What is theoretical probability?

Back

Theoretical probability is the likelihood of an event happening based on all possible outcomes, assuming all outcomes are equally likely.

Tags

CCSS.7.SP.C.7A

Front

If a bag has 3 red, 2 blue, and 4 yellow marbles, what is the probability of pulling a red marble?

Back

Probability = Number of red marbles / Total marbles = 3 / (3 + 2 + 4) = 3/9 = 1/3.

Tags

CCSS.7.SP.C.7B

Front

What is the probability of getting tails when tossing a coin?

Back

Probability = 1/2, since there are two possible outcomes: heads or tails.

Tags

CCSS.7.SP.C.7A

Front

What is the probability of rolling an even number on a 6-sided die?

Back

Probability = Number of even outcomes (2, 4, 6) / Total outcomes = 3/6 = 1/2.

Tags

CCSS.7.SP.C.7B

Front

What is the combined probability of two independent events?

Back

Combined probability = Probability of Event A * Probability of Event B.

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4