Glossary: Terms and definitions

We’ve covered a lot of terms—some of which you may have already known, and some of which are new. To make it easy to remember what a word means, we created this glossary of terms and definitions. To use the glossary for this course item, click the link below and select “Use Template.”

Link to glossary: Week 1 Glossary

OR

If you don’t have a Google account, you can download the glossary directly from the attachment below.

Weekly challenge 1

Question 1

A data analyst is working on an urgent traffic study. As a result of the short time frame, which type of data are they most likely to use?

A. Unclean

B. Historical

C. Personal

D. Theoretical

The correct answer is B. Historical

Question 2

Which of the following is an example of continuous data?

A. The runtime of a song.

B. The number of episodes in a television series.

C. The number of songs written by a musician.

D. The budget of a movie.

The correct answer is A. The runtime of a song.

Question 3

Fill in the blank: The question “Where did you vacation last year?” is an example of collecting _____ data.

A. real quantitative

B. real qualitative

C. nominal qualitative

D. nominal quantitative

The question “Where did you vacation last year?” is an example of collecting nominal qualitative data.

Question 4

Typically, a company will choose to use internal data whenever possible for its data needs. What justifies this decision?

A. Internal data is less likely to need cleaning.

B. Internal data is less vulnerable to biased collection.

C. Internal data is more reliable and easier to collect.

D. Internal data is the only data relevant to the problem.

The correct answer is C. Internal data is more reliable and easier to collect.

Question 5

Which of the following is an example of structured data?

A. Video file

B. Digital photo

C. Relational database

D. Audio file

The correct answer is C. Relational database

Question 6

Fill in the blank: A Boolean data type can have _____ possible values. A. two

B. infinite

C. 10

D. three

A Boolean data type can have two possible values

Question 7

In long data, separate columns contain the values and the context for the values, respectively. What do the columns contain in wide data?

A. Different formats

B. The data variables

C. Specific constraints

D. The data types

The correct answer is B. The data variables

Question 8

What is the term for changing the structure or format of data?

A. Data manipulation

B. Data recording

C. Data transformation

D. Data security

The correct answer is C. Data transformation