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Statistics and Probability Review Flashcards | StudBud
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Statistics and Probability Review
Statistics and Probability Review
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Stats and Probability
Flashcards
17 cards
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Questions
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Answers
1
Experiment probability is
the # of times a particular event occurs/ the # of trials
prob. of the class's test scores
how likely something is to happen
prob. of events from a sample space of known equal outcomes.
2
Probability is
prob. of an experiment .
prob. of events from a sample space of known equal outcomes.
the # of times a particular event occurs/ the # of trials
how likely something is to happen
3
Conditional Probability: P(B l A) means ...
The probability of B given A
The probability of B and A
The probability of B if A is disjoint
The probability of A given B
4
This Symbol:
∩
means...
comparative
subset
intersection
union
5
A Scattered plot
help
has coordinates plotted in a linear regression
has coordinates plotted curved regression
has coordinates plotted randomly
6
independent is ...
When separate events cannot occur simultaneously
When separate events effect each others future outcomes
When separate events do not effect each others probabilities
When separate events become combined
7
Using the strength of correlation -0.9 is considered ...
weak negative correlation
strong negative correlation
perfect negative correlation
no correlation
8
Looking at a Box and Whiskers plot the following information is given to me
upper extreme
All of the above
the median
lower extreme
9
Correlation and Causation can happen at the same time
sometimes true
never true
Realizing I should have studied more...
always true
10
Theoretical probability is
the # of times a particular event occurs/ the # of trials
prob. of events from a sample space of known equal outcomes.
prob. of an experiment .
how likely something is to happen
11
Using the strength of correlation 0.79 is considered ...
perfect positive correlation
weak positive correlation
no correlation
strong positive correlation
12
Mutually Exclusive is ...
When you meet your second living, breathing corn dog
When separate events never effect each others probability
When separate events randomized
When separate events cannot occur simultaneously
13
This equation P(A and B) = P(A) × P(B) , tells us what?
That both A and B can be made into a Venn Diagram
That A and B are independent
A and B are sets
That A and B are dependent
14
Compliment means:
Two intersecting events should be multiplied
Something nice you tell someone
Two separate events should be added
Events not in the given set
15
What events can we solve using the Addition Rule?
an incredibly tiny toaster
That events are equally likely
disjoint events
Mutually exclusive events
16
Using the strength of correlation -1 is considered ...
perfect negative correlation
weak negative correlation
no correlation
strong negative correlation
17
Population is:
combined outcomes
has an equal chance of being selected as part of the sample
consists of all the members of a group interest
consists of all the members of a group interest