110_lec15_Probability

# 110_lec15_Probability - Probability Chance behavior is...

This preview shows pages 1–6. Sign up to view the full content.

Probability Chance behavior is unpredictable in the short run but has a regular and predictable pattern in the long run.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
How can we establish probabilities? Method 1: Relative frequency – repeat an experiment many times and calculate proportion of time each outcome occurs. This is also called experimental or empirical probability. Method 2: Theoretical – if we know all events are equally likely, we can calculate probability based on theory.
Let’s Toss a Fair Coin

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Probability An event is random if individual outcomes are uncertain but there is a regular distribution of outcomes in a large number of repetitions. The probability of any outcome of a random event is a number between 0 and 1 that describes the proportion of times the outcome would occur in a very long series of repetitions.
What is the probability of rolling a 2 on a die? What is the probability of rolling a 6 on a die? Which pattern is more likely if you roll a

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 02/16/2011 for the course STAT 110 taught by Professor Johnson during the Spring '07 term at South Carolina.

### Page1 / 12

110_lec15_Probability - Probability Chance behavior is...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online