Transcript Mod 3 - Experimental Probability

Experimental
Probability
We are learning to…calculate the experimental
probability of an event happening.
Thursday, June 2, 2016
Experimental Probability

Probability – A number from 0 to 1 that tells
how likely an event is to happen.
 “What
numbers are between 0 and 1?”
 Probability is usually shown as a fraction in simplest
form.
 The fraction will be in the form:
chances of event happening
total number of possible outcomes for the event

Experimental Probability – The chances of an
event happening that is calculated using the
results of an experiment.
Experimental Probability Activity #1
Girls
Number Buying Lunch
Today
Number Packing Lunch
Today
Total
Boys
Total
Experimental Probability Activity #1
Girls
Boys
Total
Number Buying Lunch
Today
Number Packing Lunch
Today
Total
What is the experimental probability of…randomly picking a boy out of the entire
class who is buying lunch today?
= _______________
Experimental Probability Activity #1
Girls
Boys
Total
Number Buying Lunch
Today
Number Packing Lunch
Today
Total
What is the experimental probability of …randomly picking a girl out of the entire
class who is packing lunch today
= _______________
Experimental Probability Activity #1
Girls
Boys
Total
Number Buying Lunch
Today
Number Packing Lunch
Today
Total
What is the experimental probability of …randomly picking a person buying lunch
just out of the group of girls?
= _______________
Experimental Probability Activity #1
Girls
Boys
Total
Number Buying Lunch
Today
Number Packing Lunch
Today
Total
What is the experimental probability of …randomly picking a person packing
lunch just out of the group of boys?
= _______________
Experimental Probability Activity #1
Girls
Boys
Total
Number Buying Lunch
Today
Number Packing Lunch
Today
Total
What is the experimental probability of …randomly picking a boy out of the entire
class?
= _______________
The table below demonstrates the number of students in a class wearing glasses.
Boys
Girls Total
Glasses
4
2
6
No Glasses
8
14
22
Total
12
16
28
What is the experimental probability of randomly picking a person out of this
class who is a boy that wears glasses?
A.
4
B.
4/
C.
1/
7
D.
2/
7
E.
I need help with this question.
12
7
...
2/
7
1/
0
/3
In
ee
d
h
el
p
w
ith
th
is
01
4
0
0
0
0
0
Experimental Probability Activity #2

Directions:

With your group members roll 2 number cubes (at the same time) a
total of 30 times.

After each roll find the sum of the two number cubes.

Place a tally in the table below in the appropriate column.

After tallying 30 rolls write the total, as a number, that each sum
occurred. Add your results together and find the number of “total rolls”
to make sure you rolled the number cubes a total of 30 times.

Next find the experimental probability of rolling each sum with a pair of
number cubes.

Finally, answer the critical thinking questions below in complete
sentences.
The table below demonstrates the number of students in a class wearing glasses.
Boys
Girls Total
Glasses
4
2
6
No Glasses
8
14
22
Total
12
16
28
What is the experimental probability of randomly picking a person out of this
class who is a girl that does not wear glasses just out of the group of girls?
B.
7/
8
C.
4/
7
0
7
4/
14
8
1/
0
7/
D.
14
0
0
..
14
0.
A.
Jamie spun a spinner with 4 different colors 50 times and recorded her results
in the table below.
Color
Frequency
Red
Blue
Orange
Green
14
18
6
12
What is the experimental probability of spinning red or orange?
25
D.
2/
5
0
0
0
0
5
3/
2/
C.
..
25
0.
7/
..
B.
0.
20
20
A.