Probability of Simple Events

Front

What is the probability of an event?

Back

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

Front

What does a probability of 0 mean?

Back

A probability of 0 means that the event cannot occur.

Front

What does a probability of 1 mean?

Back

A probability of 1 means that the event is certain to occur.

Front

How can probability be expressed?

Back

Probability can be expressed as a fraction, decimal, or percent.

Front

What is the formula for calculating the probability of a simple event?

Back

The probability of a simple event is calculated as P(E) = Number of favorable outcomes / Total number of possible outcomes.

Front

If you roll a 6-sided die, what is the probability of rolling a 4?

Back

P(4) = 1/6.

Front

If you have a bag with 3 red balls and 2 blue balls, what is the probability of picking a red ball?

Back

P(red) = 3/5.

Front

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

Back

P(heart) = 13/52 = 1/4.

Front

If a spinner has 8 equal sections numbered 1 to 8, what is the probability of landing on an even number?

Back

P(even) = 4/8 = 1/2.

Front

What is the probability of selecting a plaid fabric from 20 samples, 8 of which are plaid?

Back

P(plaid) = 8/20 = 2/5.