26Aug2025.Biostat.Lecture9.Week7

​Introduction to Probability and Probability Models

By J Arro

​26Aug2025.Biostat.Lecture9.Week7

Word Cloud

In a single or two words, what is probability?

Multiple Choice

What is the main purpose of probability?

• To remove uncertainty from experiments

• To describe and understand uncertainty

• To guarantee outcomes in random events

• To predict the exact result of a single trial

Multiple Choice

Which of the following best describes a random process?

• An event whose outcome is completely predetermined

• An event with a single possible outcome

• An event where the outcome is uncertain but has known possible results

• An event that cannot be measured

Multiple Choice

Which of these is an example of a random process leading to an outcome?

• Reading a book and learning new facts

• Rolling a die and getting a 4

• Writing a paragraph and revising it

• Painting a picture

Poll

What number did you get in throwing your dice?

• 1

• 2

• 3

• 4

• 5 or 6

Poll

In a coin flipping exercise, what did you get in the first flip?

• H

Poll

In a coin flipping exercise, what did you get in the second flip?

• H

• T

Poll

Which pattern did you observe between your first, second flip?

• HH

• HT

• TH

• TT

Poll

If you flip a fair coin many times, what is the expected proportion of heads?

• Always exactly 50%

• Close to 50%, but not always exactly

• Always less than 50%

• It cannot be determined