Expected Value Review
Authored by Steven Sandberg
Mathematics
9th - 12th Grade
12 Questions
CCSS covered
Used 3+ times
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Find the expected value.
0.4
0.6
0
1.1
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.B.5
CCSS.HSS.MD.A.4
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
If the expected value is negative, are you expected to win?
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.B.5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Eva flips a coin. If she gets heads, she wins $4. If she gets tails, she loses $3. What is her expected value of a coin flip?
$1
$0.50
-$0.50
$0
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.B.5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Given the probability model in the table below, what is the expected value of the random variable?
X 50 20 5
P(X) 0.1 0.3 0.6
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.B.5
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Find the mean (expected value) of the probability distribution.
85
83.2
87.1
84.4
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suppose you pay $1.00 to roll a fair die with the understanding you will get $3.00 back rolling a 4 or a 2, and nothing otherwise. Is this a fair game? (Hint: the game is fair if the expected value = 0)
yes
no
Tags
CCSS.HSS.CP.A.1
CCSS.HSS.CP.B.7
CCSS.HSS.MD.B.6
CCSS.HSS.MD.B.7
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Is your expected value always going to be what happens in real life?
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.B.5
CCSS.HSS.MD.A.4
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