Stats Test 2

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

158307

Card Set

Stats Test 2

Description

Stats Test 2

Updated

2012-06-12T02:51:38Z