Name: ____________________________
Period: ___________
Experimental and Theoretical Probability 11-2 and 11-4
Grade 7 Math
Klein ISD 2013 - 2014
Terms:
& Theoretical Probability
Experimental Probability
I. Determine whether each event is likely.
(certain, likely, not likely, or impossible)
II. Theoretical Probability
Use the spinner at the below to find each probability.
Write as a fraction in simplest form.
______1 Rolling a number greater than 5 on a
number cube.
______2 Drawing a blue marble from a bag of
black and white marbles.
______3 Randomly drawing a red or pink card
from a deck of red and pink cards.
______4 Rolling a 6 on a number cube five
times in a row.
III.Theoretical Probability
5. P(W) ________
6. P(vowel) ________
7. P(not X) ________
8. P (W or X) ________
You spin the spinner numbered 0 through 9 to the right. Each outcome is equally likely. Find the probability
below as a fraction, decimal, and percent.
Fraction
Decimal
Percent
9. P(9)
_______
_______
_______
10. P(even)
_______
_______
_______
11. P(number greater than 0)
_______
_______
_______
12. P(multiple of 4)
_______
_______
_______
13. P(prime)
_______
_______
_______
14. P(2 ,3, or 11)
_______
_______
_______
IV. Number Cube Activity
Each classmate rolls the number cube 20 times and records the data in the table below.
Names:
1
2
3
4
5
6
Total
Whole Class:
1
2
3
4
5
6
Total
Write the whole class probability as a fraction, for each number on the number cube.
P(1)_____
P(2)_____
P(3)_____
P(4)_____
V. The table below is a breakdown by format of
total music sales in the United States in 2012.
P(5)_____
P(6)_____
19 Jaclyn is a soccer goalie. If she has 21 out of 25
saves in practice, what is the experimental probability
that she will have a save on the next shot on goal?
Total Music Sales in 2012
Fraction
Decimal
Percent
________
________
________
______20 Princeton counts 10 classmates out of 36
people in the library. What is the experimental
probability that the next person will be a classmate?
______15 What is the experimental probability
that any random music purchase in 2012 was a CD?
______16 What is the experimental probability
that any random music purchase in 2012 was not a
Music Video?
A
B
C
D
______21 Cami makes 15 of 20 free throws at
basketball practice. What is the experimental
probability that she will miss her next free throw?
______17 What is the experimental probability
that any random music purchase in 2012 was a
digital single?
A
B
C
D
______18 Which combination of sales has an
experimental probability of ?
______22 Jay beats Terry at table tennis 3 out of 5
games. What is the experimental probability that Terry
will win their next game?
A
B
C
D 1