Introduction to Statistics by David Spade, PhD

The lecture Introduction to Statistics by David Spade, PhD is from the course Statistics Part 1. It contains the following chapters:

What defines statistics?

To what does the “Who” of the 5 W's of statistics refer?

The “Who” refers to the group on which measurements are being collected.
The “Who” refers to who is collecting the data.
The “Who” refers to the audience to whom the results of the study will be presented.
The “Who” refers to the individual(s) that proposed the study.
The "Who" refers to the patients who will be impacted by this data.

Suppose you are measuring the height of a tree. What type of variable is height, and why?

The height of the tree is quantitative because the value we are measuring is the actual height, which has a meaningful numerical interpretation.
The height is a categorical variable because the height of a tree can be put into categories.
The height of a tree is quantitative because its height cannot be put into categories.
The height of the tree is categorical because the measurement of the height has no meaningful numerical interpretation.
The height of the tree is qualitative because it is a single quality of the tree.

Which of the following is the most appropriate way to summarize categorical data?

Bar charts, frequency tables and pie charts are all appropriate ways to summarize categorical data.
A bar chart is an appropriate way to summarize categorical data.
A frequency table is an appropriate way to summarize categorical data.
A pie chart is an appropriate way to summarize categorical data.
Bar charts and frequency tables are both appropriate ways to summarize categorical data.

Which of the following is a categorical variable?