Probability
Independent Study
Instructor: Dianne Phillips
By: Jason Mitchell
What you will learn today.
• What probability is and how its used
• Predict probability using fractions
• Draw conclusions
What is probability?
• Probability is defined as a measure of how
likely it is that some event will occur.
Example question:
If you have 4 red balls, 5 green balls and 1
blue ball in a bag; how likely would it be to
grab a green ball out of the bag?
How to answer:
Take the number of green balls over the total number
of all the balls.
There is 5 green balls and 10 balls in total.
Answer:
5/10 = 50% chance!
We have a big bag of Starbursts.
Contents of the bag
• 35 Red
• 17 Yellow
• 26 Orange
• 22 Pink
Use these numbers to answer
the following questions.
What is the probability of pulling out a yellow
Starburst?
Click on one of the answers below:
A. 35/100 = 35%
B. 48/100 = 48%
C. 17/100 = 17%
D. 5/100 = 5%
Check Contents
What is the probability of pulling out a yellow
Starburst?
A. 35/100 = 35% (Remember that it is the
number of the color over the total number of
Starburst.)
B. 48/100 = 48%
C. 17/100 = 17%
D. 5/100 = 5%
What is the probability of pulling out a yellow
Starburst?
A. 35/100 = 35%
B. 48/100 = 48% (Remember that it is the
number of the color over the total number of
Starburst.)
C. 17/100 = 17%
D. 5/100 = 5%
What is the probability of pulling out a yellow
Starburst?
A. 35/100 = 35%
B. 48/100 = 48%
C. 17/100 = 17% Great Job!
D. 5/100 = 5%
What is the probability of pulling out a yellow
Starburst?
A. 35/100 = 35%
B. 48/100 = 48%
C. 17/100 = 17%
D. 5/100 = 5% (Remember that it is the number
of the color over the total number of
Starburst.)
What is the probability of picking out a
Red Starburst?
Click on one of the answers below:
A. 14/100 = 14%
B. 68/100 = 68%
C. 99/100 = 99%
D. 35/100 = 35%
Check Contents
What is the probability of picking out a
Red Starburst?
A.
B.
C.
D.
14/100 = 14% Try Again!
68/100 = 68%
99/100 = 99%
35/100 = 35%
What is the probability of picking out a
Red Starburst?
A.
B.
C.
D.
14/100 = 14%
68/100 = 68% Try Again!
99/100 = 99%
35/100 = 35%
What is the probability of picking out a
Red Starburst?
A.
B.
C.
D.
14/100 = 14%
68/100 = 68%
99/100 = 99% Try Again!
35/100 = 35%
What is the probability of picking out a
Red Starburst?
A.
B.
C.
D.
14/100 = 14%
68/100 = 68%
99/100 = 99%
35/100 = 35% Great Job!
What is the probability of pulling out a
Pink Starburst?
Click on one of the answers below:
A. 22%
B. 45/100
C. 23%
D. 12/100
Check Contents
What is the probability of pulling out a
Pink Starburst?
A.
B.
C.
D.
22% Great Job!
45/100
23%
12/100
What is the probability of pulling out a
Pink Starburst?
A.
B.
C.
D.
22%
45/100 Try Again!
23%
12/100
What is the probability of pulling out a
Pink Starburst?
A.
B.
C.
D.
22%
45/100
23% Try Again!
12/100
What is the probability of pulling out a
Pink Starburst?
A.
B.
C.
D.
22%
45/100
23%
12/100 Try Again!
Probability using a color wheel.
Using this color wheel you will
notice that there are 6 colors:
Red, Orange, Yellow, Purple,
Blue and Green.
Example question:
If you flick the spin wheel, what is the probability of the
spinner landing on Purple OR Red?
In this question you have to take notice to the “or” at
the end. When you see “or” you have to add the two
in the answer.
Answer: There is 1 Red spot and 1 Purple spot so the answer would be…
2/6
(6 comes from the total number of colors on the wheel)
What is the probability of landing on
Yellow or Green?
Click on one of the answers below:
A. 1/6
B. 2/6
C. 3/6
D. 5/6
What is the probability of landing on
Yellow or Green?
A.
B.
C.
D.
1/6 Try Again!
2/6
3/6
5/6
What is the probability of landing on
Yellow or Green?
A.
B.
C.
D.
1/6
2/6 Great Job!
3/6
5/6
What is the probability of landing on
Yellow or Green?
A.
B.
C.
D.
1/6
2/6
3/6 Try Again!
5/6
What is the probability of landing on
Yellow or Green?
A.
B.
C.
D.
1/6
2/6
3/6
5/6 Try Again!
Contents of Starburst bag:
• 35 Red
• 17 Yellow
• 26 Orange
• 22 Pink
Contents of Starburst bag:
• 35 Red
• 17 Yellow
• 26 Orange
• 22 Pink
Contents of Starburst bag:
• 35 Red
• 17 Yellow
• 26 Orange
• 22 Pink
Great Job!
You have finished this probability lesson!