Statistics for Data Science and Business Analysis - What is a Distribution?

The video tutorial introduces the concept of probability distributions, starting with discrete examples like rolling a die and two dice. It explains how distributions show possible values and their probabilities, using tables and graphs for illustration. The tutorial clarifies that graphs are visual aids, not the distributions themselves. It concludes by transitioning to continuous distributions, which will be covered in future lessons.

What is the probability of rolling a 7 with a single die?

• 1/6

• 0

• 1/36

• 1/12

What is a key characteristic of a discrete uniform distribution?

• All outcomes have an equal probability

• All outcomes have different probabilities

• Some outcomes are impossible

• The sum of probabilities is less than 1

What does a graph of a probability distribution represent?

• The actual distribution

• The likelihood of each event

• The sum of all probabilities

• The mean of the distribution

When rolling two dice, which sum is most likely to occur?

• 12

• 7

• 2

• 11

What is the probability of getting a sum of 2 when rolling two dice?

• 1/12

• 1/6

• 1/18

• 1/36