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Stats Test 2
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Sample Space and Sample Point..
S= {Heads, tails} <-- sample point
Relative Frequency..
Past Data
Frequency/Total sample size
Classical..
Assumed equal likely outcome
Rolling Die
1/n ..n=#of outcomes
Subjective..
Based on opinion
Complement of an Event
The Complement of event A is defined to be the event consisting of all points that are not in A
Union of Two Events
The union of events A and B is the event containing all sample points that are in A or B or both
Usually a high probability
Intersection of Two Events
The intersection of events A and B is the set of all sample points that in both A AND B
Addition Law
P(A U B) = P(A) + P(B) - P(A n B)
Collectively Exhaustive
P(A) + P(B) = 1
A random variable-
a NUMERICAL description of the outcome of an experiment
Discrete- how many
Continuous- how much
Catergorical data is always..?
Discrete
Quantitative data can be..?
Discrete or Continuous
Discrete Probability Distrubitions use..
Bar Charts
f(x)=1/n
Expected value is also the..
Mean
Success and Failure..
p= Success
1-p= failure
Success is..
Success is what the question is asking for
Poisson Probability Distribution
Specified interval of time or space
Will say pertime or space
Make sure the units MATCH
A large Standard Deviation will cause..
to become larger and flatter
Author:
Calittlefield
ID:
158307
Card Set:
Stats Test 2
Updated:
2012-06-12 02:51:38
Tags:
Stats Test
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Description:
Stats Test 2
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