CIS 141 Mr. Lindsey Data Analytics Part 2
Which of the following is an example of a floating point variable?
14.1
What metaphor did Mr. Lindsey use while talking about algorithms during the Zoom 6 meeting?
Algorithms are like recipes.
Which of the following is an example of a "data object" for a car dealer that Mr. Lindsey talked about during the Zoom 6 meeting?
All of the above
This technique of data scrubbing is used to convert similar numeric or timestamp values into a category using a discrete integer. It is most useful in cases where the gap between numeric or timestamp information is arbitrary or over specific.
Binning
_____ variables are binary values that produce one of two set outcomes.
Boolean
The goal of _____ is to clean a dataset in preparation for machine processing. This ensures that what is fed to the algorithm is compatible and relevant for analysis.
Data scrubbing
A(n) _____ variable is expressed as a lowercase y in data science notation.
Dependent
Mr. Lindsey stressed which of the following practices to maintain the integrity of one's source data during the Zoom 6 meeting.
Do your work on a copy of your data, not the original.
Adding more data to an analytics model is always a precursor to a deeper level of insight and understanding.
False
Discrete variables are infinite and compatible with mathematical operations such as addition, subtraction, division, etc.
False
What metaphor did Mr. Lindsey use when introducing the "variable selection" technique of data scrubbing during the Zoom 6 meeting?
Finding a needle in a hay stack
A(n) _____ variable is expressed as an uppercase X in data science notation.
Independent
In data analytics, the _____ variables act as input and the _____ variable as the output.
Independent, dependent
This type of variable is a whole number.
Integer
What metaphor did Mr. Lindsey use when introducing the topic data scrubbing during the Zoom 6 meeting?
Making coconut shrimp
This technique of data scrubbing attempts to limit the number of variables fed to an analytics model based on relevancy.
Merging variables
Nominal comes from the Latin word for _____.
Name
The maximum number of variables that one can plot on a scatterplot is _____.
None of the above
Oliver Theobald contrasts data and oil in the "Variables" chapter of the analytics book. Which of the following is a difference that he identifies.
Oil loses its value when it is used while data gets more valuable with use.
This technique of data scrubbing transforms discrete variables into a binary format, represented as "1" or "0" (or True or False).
One-hot encoding
This type of variable compares two items numerically. For example, the number of Hilltopper fans to Wildcat fans at WKU is 7:2.
Ratio
Which of the following is an example of an ordinal variable?
Third
Oliver Theobald writes that data scrubbing is _____.
Time consuming
Discrete variables have a finite value and cannot be aggregated or mathematically manipulated with other variable observations.
True
Per Oliver Theobald, _____ help to distinguish contrasting qualities between data objects, such as age, gender, and height.
Variables