6th Grade Probability Test

Front

What is the complement of an event?

Back

The complement of an event is the probability that the event does not occur. It is calculated as 1 minus the probability of the event occurring.

Front

If a coin is flipped 20 times and lands on heads 11 times, what is the probability of not landing on heads?

Back

P' = 9/20

Front

How do you calculate the probability of multiple outcomes?

Back

To calculate the probability of multiple outcomes, add the probabilities of each individual outcome.

Front

What is the formula for calculating the probability of an event?

Back

P(Event) = Number of favorable outcomes / Total number of outcomes.

Front

What is the probability of drawing a purple or green marble if there are 4 purple and 7 green marbles in a jar of 11?

Back

P(purple or green) = 4/11.

Front

If there are 15 marbles in total and 8 are red, what is the probability of not choosing a red marble?

Back

P' = 7/15.

Front

What is the probability of it snowing 3 days out of a week?

Back

P = 3/7.

Front

What does it mean if an event is independent?

Back

An event is independent if the occurrence of one event does not affect the probability of another event occurring.

Front

What is the probability of rolling a 3 on a standard six-sided die?

Back

P(rolling a 3) = 1/6.

Front

How do you express the probability of an event as a fraction?

Back

The probability of an event can be expressed as a fraction by dividing the number of successful outcomes by the total number of possible outcomes.