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Statistical Review
Statistical Review
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1
whats a good statistical question
do you wear make up
how many hours do you spend on your phone per day
is your hair blond
2
statistical question?
How many square feet of floor space does your house have?
How many cars do you have
How many siblings are in your family
3
Find the DEPENDENT probability.
25%
12.5%
6.25%
0%
4
How are mutually exclusive probabilities calculated?
P(A)2 x P(B)2
P(A)+P(B)
P(A)/ P(B)
P(A) x P(B)
5
What is the probability of the spinner landing on red or blue?
3 out of 8
3 out of 5
5 out of 8
3 out of 10
6
Which of the two graphs are misleading?
One on the Left
Both
None
One on the right
7
What can be said of CORRELATION and CAUSATION?
Correlation and Causation mean the same thing
Correlation and Causation are not related
Correlation equals Causation
Correlation does not equal Causation
8
Which scatter plot has a negative correlation?
A
B
D
C
9
Write the following in Factorial Form: (66)(65)(64)(63)(4)(3)(2)(1)
66!4!/62!
66!+4!
66!-4!
66!4!/63!
10
What are two types of statistical studies?
controlled and uncontrolled
Descriptive and inferential
observational study & expiremental
Population and Sample
11
What is Dependent Probability?
An outcome that is affected by the last outcome.
An outcome that will occur multiple times.
An outcome that will occur once.
An outcome that won't be affected by the previous one.
12
What is the probability of NOT picking a blue marble?
8 out of 2
2 out of 10
8 out of 10
2 out of 8
13
Write the following in Factorial Form: (20)(19)(10)(9)
20!/18!
20!-18!/10!-8!
20!/8!
20!10!/18!8!
14
Is this a left skew?
False
True
15
Which is a statistical question?
How much money do you have?
How much money do I have?
Who is on the $100 bill?
How much do I spend each month?
16
Evaluate the factorial.
3
9
6
12
17
Causation in statistics is____
Direct relationship between two variables
Being result of something
Indirect relationship between two variables
18
Use the counting principle to find the number of combinations? (4 letters ranging from A-O)
60
50,000
15,000
50,625
19
What formula do we use for
mutually inclusive
probability?
P(A) + P(B) - P(A+B)
Favorable Outcomes/Total Outcomes
Favorable Outcomes/Unfavorable Outcomes
P(A) + P(B)
20
Find the probability of the independent events.
1/12
1/2
1/8
1/6
21
Which distribution is Obviously skew to the Left?
heights of Boys
both
neither
heights of Girls
22
What is a Mutually Exclusive Probability?
events that have no outcomes in common/ can never occur
events that have some common outcomes
events that have no outcomes in common/ can occur together
events that have the same outcomes/ always occur
23
Find the compound probability of rolling a 3, and then an even number?
1/12
1/2
1/8
1/6
