1/31 Prob & M.A.D.

Are the following statements true or false? If false, fix the statement: Simple probability is more than one event?

• True

• False, it is the probability of more than one event.

• False, it is the probability of one event.

Are the following statements true or false? When you use 'and' in a probability problem, you need to multiply probabilities together to find your final answer.

• True

• False, it means to add

Are the following statements true or false? The number of possible outcomes when you flip a coin is 4.

• True

• False, a coin only has two sides.

Are the following statements true or false? The probability ¾ is the same as 65%.

• True

• False, when you divide 3 by 4 your get 75%

Mr. Zaragoza has a bag with eight green marbles, five blue marbles, and seven red marbles. Calculate the following probabilities, assuming all the marbles are in the bag each time.

a. What is the probability of pulling blue marble? Make sure to use probability notation and show all work

• 5/20 = 1/5

• 5/20 = 1/4

• 5/18

• 5/10

Mr. Zaragoza has a bag with eight green marbles, five blue marbles, and seven red marbles. Calculate the following probabilities, assuming all the marbles are in the bag each time. Write each answer as a fraction, decimal, and percent.

b. What is the probability of pulling a green marble or a red marble? Make sure to use probability notation and show all work.

• 15/20 = 3/4

• 8/20 = 2/5

• 7/20

• 10/20 = 1/2

Ms. Valencia has a six sided dice and a coin with an eagle on one side and a fox on the other.

Using an area model below to show all the possible outcomes that can occur if the was to flip the coin and roll the dice?

• 
• 
• 
• 

A bow contains three red marbles, two blue marbles and two yellow marbles. Assuming the marbles are not being replaced when drawn, answer the following question.

a. Find the probability of drawing a blue marble and then a yellow marble.

• 2/21

• 4/21

• 4/24

• 3/21

What does M.A.D. stand for?

• Mean Absolute Deviation

• Mean Average Deviation

• Median Absolute Deviation

• Mode Absolute Deviation

How do you find the mean of a data set?

• Add all the numbers and divide by the number of values

• Multiply all the numbers together

• Subtract the smallest number from the largest

• Add the smallest and largest numbers