Theoretical
Experimental
Mean, mean, mode, and range
Vocabulary
How Likely is it?
100
Jose is flipping a coin, what is the probability that the coin lands on heads.
1/2 or .5 or 50%
100
Hasaan has a spinner with 5 equal sections, each a different color. After only 10 spins, the pointer had landed on red 40% of the time. After a whopping 1,000 spins, the pointer landed on red only 22% of the time. How can Hasaan account for this change in experimental probability?
As the number of trials increase, the experimental probability reaches closer to the theoretical probability. (The Law of Large Numbers)
100
Find the mean of the data: 6 , 15 , 16 , 20 , 13 , 5 , 10 , 16
12.6
100
Define "theoretical probability."
It is the probability of what we expect to happen.
100
How likely is it that a coin is flipped and lands on tails?
Equally likely
200
Jesus and Francisco are playing marbles. If there are 5 yellow marbles, 3 blue marbles, and 7 green marbles what is the probability of selecting a blue marble?
1/5 or .2 or 20%
200
What is the probability of selecting the color red?
1/6
200
Find the mean: ) 9 , 19 , 16 , 9 , 16 , 2 , 14 , 8 , 2
10.6
200
Define "experimental probability."
The probability of what actually happens.
200
How likely is it that a number cube is tossed and lands on 3?
Unlikely
300
What is the probability of rolling a 3 on a dice?
1/6
300
A letter tile is randomly selected from a bag, recorded, and replaced 100 times. The results are listed below. What is the experimental probability of selecting the letter "E"? A = 16 E = 11 I = 29 O = 19 U = 25
11/100 or 0.11, or 11%
300
Find the median: ) 9 , 19 , 16 , 9 , 16 , 2 , 14 , 8 , 2
9
300
The average of the data
The mean
300
How likely is it that a number cube is tossed and it lands on 8?
never going to happen
400
Jesus and Francisco are playing marbles. If there are 5 yellow marbles, 3 blue marbles, and 7 green marbles what is the probability of selecting a red marble?
0
400
Pedro recorded the types of birds that visit his bird feeder. Based on the results below, what is the probability the next bird will be a chickadee? Woodpecker = 3 Chickadee = 5 Cardinal = 1 Sparrow = 13 Blue Jay = 3
1/5, or 0.20, or 20%
400
Find the range:17 , 17 , 11 , 10 , 1 , 20 , 17 , 17
19
400
The number in the middle of the data
The median
400
How likely is it that a number cube is tossed and lands on any number 1-6?
Certain
500
Jesus and Francisco are playing marbles. If there are 5 yellow marbles, 3 blue marbles, and 7 green marbles what is the probability of not selecting a yellow marble?
2/3
500
What is the probability of selecting a yellow and blue?
5/6
500
Find the interquartile range:
12 , 18 , 5 , 8 , 15 , 2 , 9 , 17 , 1
16-3.5= 12.5
500
The spread of the data
variability or range
500
How likely is it that a number cube lands on 2 and a coin lands on heads?
unlikely