Unit 1 - Quiz Review

Question 1

Quantitative variables represent categorical information, measuring 'types' of things

Accepted Answer

False

Question 2

SAT score (400-1600) is representative of a ______ variable

Accepted Answer

interval discrete

Question 3

________ in the CRISP-DM process relates to gaining context on the problem to solve (e.g., client history)

Accepted Answer

Business understanding

Question 4

I have a student take the same test 3x in a month and they receive the following scores: 76%, 100%, 89%, this...

Accepted Answer

indicates my test lacks reliability

Question 5

I ask "How much do you love the movie Twilight?" when trying to measure ppl's interest in vampires, this...

Accepted Answer

is not a valid way to measure this data

Question 6

A variable measuring rankings in a pie eating contest (1st, 2nd, 3rd, etc.) would be...

Accepted Answer

Ordinal

Question 7

The indicators of data quality include all of the following EXCEPT

Accepted Answer

Sensitivity

Question 8

When we use secondary data, we can reduce potential bias in our analyses by doing all of the following EXCEPT

Accepted Answer

removing observations with outliers or missing data

Question 9

A grocery store owner collects data on customer satisfaction by having clerks count the number of smiles/frowns they see

Accepted Answer

This is observational data collection

Question 10

Heart rate (bpm) would be considered...

Accepted Answer

Ratio

Question 11

It would be fine for a tree farm to project evergreen sales for January based on the prior month's data

Accepted Answer

False

Question 12

An individual with no children leaves a Q on hours of TV watched by children blank, this is an example of...

Accepted Answer

structurally missing data

Question 13

A variable indicating an individual's zip code (e.g., 84321) would be considered...

Accepted Answer

nominal

Question 14

Determining that smoking cigarettes causes lung cancer is an example of...

Accepted Answer

Diagnostic analytics

Question 15

Examining historical weather data and concluding the average temperature in 2022 was 5 degrees hotter than 2021 would be

Accepted Answer

Descriptive analytics

Question 16

Determining that multiple transactions with the same timestamp, items purchased and ID are duplicates concerns...

Accepted Answer

Uniqueness

Question 17

Acquiring customer data through survey is _______, while pulling product data from a database is ________

Accepted Answer

primary data collection, secondary data collection

Question 18

In second. data collection the data ___ and is considered ___ when it's already in a dataset or ____ when we use an API

Accepted Answer

already exists, precompiled, not precompiled

Question 19

________ describes expected fluctuations/trends in the data over the course of a year

Accepted Answer

Seasonality

Question 20

All of the following are examples of unstructured data EXCEPT:

Accepted Answer

Counts of rainy days by zipcode

Questions 20