Exploring Simple Probability Concepts

Mrs. Bradfield introduces the concept of probability, explaining it as the likelihood of an event occurring. She describes the probability scale from 0 (impossible) to 1 (certain) and demonstrates how to express probability as fractions, decimals, and percentages. The video includes examples using coins, marbles, dice, and spinners to illustrate simple and advanced probability calculations. Theoretical probability is also discussed, with emphasis on understanding and calculating probabilities in various scenarios.

What does a probability of 0 indicate?

• An event that is likely to happen

• An event that has a 50% chance of happening

• An event that is impossible to happen

• An event that is certain to happen

How is probability typically expressed?

• As a letter

• As a whole number

• As a percentage

• As a word

What does a probability greater than 1 indicate?

• An impossible event

• A certain event

• A highly likely event

• An error in calculation

How can you simplify the fraction 6/18 in terms of probability?

• 1/2

• 1/3

• 2/3

• 1/4

What is the probability of flipping heads on an unbiased coin?

• 100%

• 25%

• 75%

• 50%

If a bag contains 3 red marbles and 3 blue marbles, what is the probability of picking a red marble?

• 1/6

• 1/3

• 1/2

• 2/3

What is the probability of not picking a green marble when there is one green marble among six?

• 1/3

• 1/2

• 5/6

• 1/6

In a spinner divided into four sections with one being orange, what is the probability of landing on orange?

• 100%

• 25%

• 75%

• 50%

What is the probability of not rolling doubles with two fair number cubes?

• 5/6

• 2/3

• 1/6

• 1/3

What is the probability of rolling a sum of 10 with two fair number cubes?

• 1/6

• 1/9

• 1/12

• 1/18