Compund Probability
Maria is flipping a coin and spinning a spinner. The spinner has 4 equal sections labeled A-D. What is the probability the coin will land on heads and the spinner will land on the letter "A"?
1/8
What is the probability that you roll a odd number on a dice.
3/6 or 1/2
You are trying to decide what to wear to school. You know you have a green pair of pants, a red pair, and a blue pair. You also have a brown shirt, a plaid shirt, and a yellow shirt. How many different outfit combinations can you make?
9
Tossing a coin and spinning a spinner would be examples of _______________ compound events.
(Dependent or Independent)
Independent
Explain how to find the mean of a set of data.
Add all the numbers and divide by the number of items in the data.
Mr. Rose flips a coin then rolls a dice. What is the probability that that he gets heads and then an odd number.
3/12 = 1/4
What is the probability that you roll a 7 on a six sided dice.
0 or 0/6
What is the number of possible outcomes for spinning one spinner with 8 equal sections and another spinner with 6 equal sections?
48 possible outcomes
Picking a marble out of a bag, not replacing it, then picking another marble out of the bag would be and example of ________________ compound events.
(Dependent or Independent)
Dependent
What are the 3 Measures of Central Tendency?
Mean, Median, Mode
What is the probability of rolling two odd numbers in a row with a standard number cube?
1/4 or .25 or 25%
The numbers 1 - 12 are put into a hat what is the probability that you draw an even number?
6/12 or 1/2
Amiya and Keyshawn are candidates for class president of the 7th grade. Ajaye, Chishon, and Laura are candidates for vice president. How many winning combinations are possible?
6
What methods could be used to find a sample space (all of the possible outcomes)? Name at least one.
Tree Diagram, Chart, Counting Principle
Find the mean of the following test scores:
79, 64, 88, 91, 95
417/5 = 83.4
There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. One marble is taken out and not replaced. A second marble is then taken out. What is the probability both marbles that were taken out are red?
6/30 = 1/5
The numbers 1 - 12 are put into a hat what is the probability that you draw a multiple of 3?
4/12 = 1/3
A sub shop offers the following options: rye, wheat, white, and whole grain bread; American, Swiss, and provolone cheese; and turkey, ham, and chicken. How many different sandwich combinations can they make.
36
The formula for calculating probability is:
# of ______________outcomes
P(event) = _______________________
# of ______________outcomes
# of favorable outcomes
____________________
# of possible outcomes
Find the median and range of the following data:
34, 62, 19, 46, 90, 12, 30, 22
Median = 32
Range = 78
The letters of the word "Math Class" are put into a hat and randomly drawn out. What is the probability that you draw out a M and then a S if the letters are not replaced.
2/72 = 1/36
You roll two dice and add the dice together. What is the probability that the sum is 6.
5/36
A typical number cube is rolled, then a spinner with 4 equal spaces with the letters A, B, C, D is spun, then a coin is tossed. How many winning combinations are possible and name ONE of the possible winning combinations?
48
Answers vary: 1 - A - H, 1 - A - T, 2 - A - H, etc...
What is the difference between Experimental and Theoretical Probability?
• Theoretical: what mathematics predicts should occur
• Experimental: what actually occurs when you conduct a probability experiment
Find the Mean and the Mode of the following data:
93, 68, 87, 54, 50, 68
Mean = 420/6 = 70
Mode = 68