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Probability and Statistics
Probability and Statistics
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Basic Probability and Statistics
Flashcards
21 cards
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Practice quiz
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Questions
21
Answers
1
P (event) = number of favorable outcomes
multiplied by the number of possible outcomes
divided by 1
divided by number of possible outcomes
I don't know
2
Independent events are when...
events won't help each other out.
a first event does not affect a second event..
P(events)
one event affects the outcome of another event
3
Probability will always be a number from zero to...
any number
1.5
1
0.5
4
20 jelly beans are in a jar; 6 red, 4 purple, 5 orange, and 5 green. What is P(red)? simplify!
1/4
2/5
3/10
5
A spinner has 4 sections; 1 red,1 blue,1 orange,1 green,1 yellow. What is P(spinning brown)?
1/4
0
2/8
6
Experimental probability is based on experimental data.
False
True
7
A spinner has 4 sections: one green, one blue, one yellow, one red. What is P(not yellow)?
3/4
1/2
1/4
8
What color are Ms. signer's eyes?
Red
Green
Blue
Brown
9
Theoretical probability is based on experimental data.
True
False
10
If there is a strong chance that an event will happen then... (hint: two answers are correct)
P= 0.75
p=0
P=3/4
p=1
11
An example of complement(opposite!) events is...
P(green) and P(not green)
P(green) + P(yellow)
P(A) + P (B)
12
What is the probability that tomorrow is the last day of school?
1
3/4
0
1/2
13
What did you have for breakfast this morning?
cereal
pop tarts
toast
none of these things
14
On a number cube, what is P(odd number)? Simplify!
1/2
1/3
4/6
15
Same jelly beans from last example. What is P(red or purple) Simplify!
1/5
2.5
1/2
3/10
16
What is the definition of probability?
to ratios are equal
a measure of how likely that an event will occur
their isn't one
a result of multiplying
17
What was the #1 pop song last week?
See You Again
One Last Time
Uptown Funk
Sugar
18
If probability = 1 then the event will definitely happen
False
True
I'm lost
can't tell
19
If probability = 0 then the event will never happen impossible!
True
I'm lost
False
sometimes
20
P(red) and P (not red) are...
complementary angles
probability
complement events
21
A coin is tossed. What is the probability of the coin landing on heads?
.50
5
0.75
1.8
