Stat Unit 4 Retake

Front

What is the probability of an event that cannot occur?

Back

0

Front

How do you calculate the probability of selecting a specific category from a pie chart?

Back

Divide the number of occurrences of that category by the total number of occurrences.

Front

What does 'OR' mean in probability?

Back

It refers to the union of two events, meaning at least one of the events occurs.

Front

How do you express a probability in fraction form?

Back

By dividing the number of favorable outcomes by the total number of possible outcomes.

Front

What is the complement of an event in probability?

Back

The complement of an event A, denoted as P(NOT A), is the probability that event A does not occur.

Front

If the probability of an event is 0.25, what is the probability of its complement?

Back

0.75

Front

What is the formula for calculating the probability of two independent events occurring together?

Back

P(A AND B) = P(A) * P(B) for independent events.

Front

What is the significance of a probability of 1?

Back

It indicates that the event is certain to occur.

Front

What is the significance of a probability of 0.5?

Back

It indicates that the event has an equal chance of occurring or not occurring.

Front

How do you find the probability of an event given a specific age range?

Back

Count the number of individuals in that age range and divide by the total number of individuals surveyed.