QA-1 Flashcards
1
Q
Discrete Random Variable
A
- Takes Only Discrete Countable Values
2. Probability of Taking A Value
2
Q
Continuous Random Variable
A
- Takes Continues Values Even in Defined Range
- Probability of Occurring Within a Range
- Probability of Taking a Value is 0
3
Q
Probability Density Function
A
- Probability Distribution Function
- Probability is Not Same for Every Range
- Probability is One When Integrated from Min. Lower to Max. Upper
4
Q
Cumulative Distribution Function
A
- Probability of Less Than or Equal to a Number
- Non- Decreasing Function
- Probability of Less Than or Equal to a Max. is 1
5
Q
Probability of Between a and b
A
- CDF(b)- CDF(a)
2. a<=b
6
Q
Probability of Greater Than a
A
1- CDF(a)
7
Q
Inverse CDF
A
From Probability
8
Q
Mutually Exclusive Events
A
Sum of Individual Probabilities
9
Q
Independent Events
A
Multiplication of Individual Probabilities
10
Q
Use of Probability Matrix
A
More Than One Variable
11
Q
Conditional Probability
A
Non- Independent Events
12
Q
Bayes’ Theorem
A
- From Past to Change in Present
2. Change in Probability Due To Occurring of an Event
