7.1 & 7.2 Probability FLASHCARD

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 possible outcomes)

Front

What is the probability of drawing a specific item from a group?

Back

The probability of drawing a specific item is calculated by dividing the number of that item by the total number of items.

Front

If a box contains 6 lipsticks, 4 eye shadows, 6 eye liners, and 5 mascaras, what is the total number of items?

Back

Total items = 6 + 4 + 6 + 5 = 21.

Front

What is the probability of grabbing a lipstick from the box?

Back

Probability = 6 lipsticks / 21 total items = 6/21.

Front

What is the probability of drawing a lemon candy from a bag of 30 candies?

Back

Probability = 3 lemon candies / 30 total candies = 1/10.

Front

What is the probability of rolling a die and getting a six?

Back

Probability = 1 favorable outcome (six) / 6 total outcomes = 1/6.

Front

What is the theoretical probability of NOT landing on yellow if a spinner has 8 equal sections?

Back

Probability of NOT landing on yellow = 7 non-yellow sections / 8 total sections = 7/8.

Front

How many 10s are in a standard deck of 52 cards?

Back

There are 4 tens in a standard deck of cards.

Front

What is the probability of drawing a 10 from a standard deck of 52 cards?

Back

Probability = 4 tens / 52 total cards = 4/52.