Probability and Statistics

Probability

Probability

• Probability is how likely something will happen

• Ex. When you toss a coin, there are 2 possible outcomes. You will either get HEADS or TAILS. So for heads there is a 1/2 chance and for TAILS there is a 1/2 chance.

• probability of an event happening= number of ways it can happen/total number of outcomes

Be sure to watch this video for clear understanding.

Multiple Choice

The letters that form the word MATHEMATICS are placed individually in a bowl. When selecting a letter from the bowl, what is the probability of choosing a vowel?

• 16/121

• 4/11

• 3/11

• 5/11

Multiple Choice

What is the probability of spinning green?

• 1/3

• 1/4

• 1/2

• 3/11

Multiple Choice

A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?

• 3
• 1/10
• 3/10
• 30%

Multiple Choice

What is the probability of selecting an orange candy?

• 0%
• 25%
• 50%
• 100%

Multiple Choice

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6
• 1/2
• 1/3
• 1/6