Probability
What is probability?
The likelihood of something happening
15 marbles are in a bag. 8 are red, 7 are blue. What is the probability of drawing red marble?
8 / 15
Why is polling useful?
Polling helps us to make an inference on the opinion of the whole population
What are the chances of rolling a 2 on a six sided dice?
1 / 6
What is the difference between independent and dependent events?
Dependent events influence the probability of other events.
Independent events do not affect one another.
Identify the error.
How satisfied are you with your pay and work environment?
Double-barreled question
Define.
A rule that tells us how to assign probabilities when we don't have any special knowledge of the situation.
Principle of Indifference
What is this an example of?
Taking an uber home and finding a penny on the sidewalk?
Independent events
Identify the error.
Asking Fairfield University students if they prefer Linda's or Theas dining halls.
Frame error
What is this an example of?
The probability of tearing one's ACL given that they play soccer.
Conditional Probability
What is this an example of?
Buying a lottery ticket every 50 days and winning the lottery.
Dependent events
Identify the error.
Data shows that students like the coffee from the Market better than from Einstein's. However, it is reported that students like coffee from Einstein's better.