# Types of Events

**Event **means one (or more) outcomes.

**An event with only one outcome:**
- Getting a Tail when tossing a coin is an event
- Rolling a "5" is an event.

**An event with several outcomes:**
- Choosing a "King" from a deck of cards (any of the 4 Kings)
- Rolling an "even number" (2, 4 or 6)

### Types of Events

**1. Independent**

**1. Independent**

Each event is

**NOT**affected by any other eventsExample: Toss a coin three times and it comes up 'Head' each time. What is the chance of 'Tail' in the next toss? Answer: It is always 50%.

**Gambler's Fallacy:**'A tail is due' or'Just one more go, my luck is due'

**2. Dependent**

**2. Dependent**

An event

**can**be affected by**previous events**Also called

**Conditional probability***Example: Chance of drawing a King 1st Attempt: 4 out of 52

If 1st card

**was**a King, 2nd card has**less**chances to be King.**3/51**If 1st card was

**NOT**a King, 2nd card has**more**chances to be King.**4/51**

**3. Mutually Exclusive**

**3. Mutually Exclusive**

Events that can't happen at the same time

Example: Heads and Tails are Mutually Exclusive

### Conditional Probability*

A conditional probability is the probability of an event, given some other event has already occurred. Example: A ball hit the red shelf (event A), what's the probability it also hit the blue shelf (event B)? Refer to the visual explanation at Setosa.io

Link: - MathsIsFun: Types of Events - Setosa.io: Conditional probability

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