QA-1

Question 1

Discrete Random Variable

Answer 1

1. Takes Only Discrete Countable Values

2. Probability of Taking A Value

Question 2

Continuous Random Variable

Answer 2

1. Takes Continues Values Even in Defined Range
2. Probability of Occurring Within a Range
3. Probability of Taking a Value is 0

Question 3

Probability Density Function

Answer 3

1. Probability Distribution Function
2. Probability is Not Same for Every Range
3. Probability is One When Integrated from Min. Lower to Max. Upper

Question 4

Cumulative Distribution Function

Answer 4

1. Probability of Less Than or Equal to a Number
2. Non- Decreasing Function
3. Probability of Less Than or Equal to a Max. is 1

Question 5

Probability of Between a and b

Answer 5

1. CDF(b)- CDF(a)

2. a<=b

Question 6

Probability of Greater Than a

Answer 6

1- CDF(a)

Question 7

Inverse CDF

Answer 7

From Probability

Question 8

Mutually Exclusive Events

Answer 8

Sum of Individual Probabilities

Question 9

Independent Events

Answer 9

Multiplication of Individual Probabilities

Question 10

Use of Probability Matrix

Answer 10

More Than One Variable

Question 11

Conditional Probability

Answer 11

Non- Independent Events

Question 12

Bayes’ Theorem

Answer 12

1. From Past to Change in Present

2. Change in Probability Due To Occurring of an Event