7th Grade Milestone Review - Probability of Simple Events

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 and 1.

Front

What is the formula for theoretical probability?

Back

Theoretical probability = (Number of favorable outcomes) / (Total number of outcomes)

Front

What is experimental probability?

Back

Experimental probability is calculated by dividing the number of times an event occurs by the total number of trials.

Front

How many hearts are in a standard deck of cards?

Back

There are 13 hearts in a standard deck of 52 cards.

Front

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

Back

1/4 or 0.25.

Front

If a bag contains 3 red marbles, 2 blue marbles, and 4 yellow marbles, what is the total number of marbles?

Back

Total number of marbles = 3 + 2 + 4 = 9.

Front

What is the theoretical probability of pulling a red marble from the bag mentioned above?

Back

Theoretical probability = 3/9 or 1/3.

Front

What is the probability of NOT pulling out a blue marker from a bag containing 4 red, 5 blue, 3 yellow, and 3 green markers?

Back

Probability of NOT pulling out a blue marker = 2/3.

Front

If an event has a probability of 1, what does that mean?

Back

It means the event is certain to occur.

Front

If an event has a probability of 0, what does that mean?

Back

It means the event is impossible and will not occur.