Probability Prediction

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.

Front

How do you calculate the probability of an event?

Back

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

Front

What is a favorable outcome in probability?

Back

A favorable outcome is an outcome that satisfies the condition of the event we are interested in.

Front

What does it mean if an event has a probability of 0?

Back

It means that the event is impossible and will not occur.

Front

What does it mean if an event has a probability of 1?

Back

It means that the event is certain and will definitely occur.

Front

If a bag contains 5 red marbles and 3 green marbles, what is the probability of drawing a green marble?

Back

Probability of green marble = 3 / (5 + 3) = 3/8.

Front

What is the total number of outcomes when rolling a six-sided die?

Back

The total number of outcomes is 6.

Front

If 20 out of 35 people prefer a certain brand, how do you predict preferences for 400 people?

Back

Use the ratio: (20/35) * 400 = 228 people.

Front

What is the least likely color to choose from a bag with 6 red, 4 white, 7 blue, and 8 yellow counters?

Back

The least likely color is white, with a probability of 4/25.

Front

How do you find the probability of an event not occurring?

Back

Probability of not occurring = 1 - Probability of occurring.