BUSN 5000 Midterm Exam Questions With Correct
Answers
The term data is (singlular/plural) _____. - CORRECT ANSWER✔✔-Plural
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A data set is made up of _____ that contain information on a specific entity. -
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CORRECT ANSWER✔✔-Records |
Each record is made of _____ that contain measurements of known types. -
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CORRECT ANSWER✔✔-Fields |
A data table is made up of rows containing _____ and columns containing _____.
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- CORRECT ANSWER✔✔-Observations, variables
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We say that data are tidy if each variable corresponds to a _____, each row an
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_____, and each cell a _____. - CORRECT ANSWER✔✔-column, observation,
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single value |
A quick-serve restaurant chain records sales, staffing and customer traffic every
| | | | | | | | | | |
day for each store. You recognize this as a _____ data set where the unit of
| | | | | | | | | | | | | | | |
observation is the store-day. - CORRECT ANSWER✔✔-panel
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We distinguish 4 stages of data analysis and refer to them compactly as _____ (in
| | | | | | | | | | | | | | |
all caps). - CORRECT ANSWER✔✔-ATAC
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,Name the stages of ATAC - CORRECT ANSWER✔✔-acquisition, transformation,
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analysis, communication |
The second stage involves, among other things, making sure the data are _____
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(as the Posit folks would say). - CORRECT ANSWER✔✔-Tidy
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In the third stage, the workhorse will be the _____. - CORRECT ANSWER✔✔-CEF
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A variable will not have _____ if it does not measure what it is supposed to. -
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CORRECT ANSWER✔✔-Validity |
How to handle missing data depends on whether they are missing _____. -
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CORRECT ANSWER✔✔-Endogenously |
A national company has developed a new product and is offering it for sale at a
| | | | | | | | | | | | | | | |
discount to introduce it to the market. Randomly surveying customer who
| | | | | | | | | | |
purchased the product in the initial discount period (would/would not) ______
| | | | | | | | | | |
generate a sample representing the population of typical customers. - CORRECT
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ANSWER✔✔-Would not |
It is advisable to _____ the acquisition, transformation and analysis tasks. -
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CORRECT ANSWER✔✔-Separate |
One reason reproducibility matters is to protect and support your _____ self. -
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CORRECT ANSWER✔✔-Future |
, Another reason reproducibility matters to guard against _____ and _____. -
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CORRECT ANSWER✔✔-error, fraud | |
One important component is describing the exact _____ of your raw input data. -
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CORRECT ANSWER✔✔-source |
You should view a reproducible analysis as a _____ that you should be able to
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produce again and again. - CORRECT ANSWER✔✔-product
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A _____ is a representation of the data structure comprising all of the attributes
| | | | | | | | | | | | | |
of the data and their types. - CORRECT ANSWER✔✔-data schema
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This representation of the data structure identifies the _____ to which each
| | | | | | | | | | | |
observation pertains. - CORRECT ANSWER✔✔-unit of record
| | | | | |
This representation of the data also makes clear what are the _____ that identify
| | | | | | | | | | | | | |
an observation. - CORRECT ANSWER✔✔-key variables
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A terabyte is equal to a _____ bytes. - CORRECT ANSWER✔✔-1 trillion
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R stores real numbers as a _____ data type and allocates _____ bytes of data to
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each number. - CORRECT ANSWER✔✔-numeric, 8
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A megabyte can store _____ num values, while a terabye can store roughly a
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_____ times that. - CORRECT ANSWER✔✔-131072, 1 million
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Answers
The term data is (singlular/plural) _____. - CORRECT ANSWER✔✔-Plural
| | | | | | | |
A data set is made up of _____ that contain information on a specific entity. -
| | | | | | | | | | | | | | | |
CORRECT ANSWER✔✔-Records |
Each record is made of _____ that contain measurements of known types. -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-Fields |
A data table is made up of rows containing _____ and columns containing _____.
| | | | | | | | | | | | |
- CORRECT ANSWER✔✔-Observations, variables
| | | |
We say that data are tidy if each variable corresponds to a _____, each row an
| | | | | | | | | | | | | | | |
_____, and each cell a _____. - CORRECT ANSWER✔✔-column, observation,
| | | | | | | | | |
single value |
A quick-serve restaurant chain records sales, staffing and customer traffic every
| | | | | | | | | | |
day for each store. You recognize this as a _____ data set where the unit of
| | | | | | | | | | | | | | | |
observation is the store-day. - CORRECT ANSWER✔✔-panel
| | | | | |
We distinguish 4 stages of data analysis and refer to them compactly as _____ (in
| | | | | | | | | | | | | | |
all caps). - CORRECT ANSWER✔✔-ATAC
| | | |
,Name the stages of ATAC - CORRECT ANSWER✔✔-acquisition, transformation,
| | | | | | | | |
analysis, communication |
The second stage involves, among other things, making sure the data are _____
| | | | | | | | | | | | |
(as the Posit folks would say). - CORRECT ANSWER✔✔-Tidy
| | | | | | | |
In the third stage, the workhorse will be the _____. - CORRECT ANSWER✔✔-CEF
| | | | | | | | | | | |
A variable will not have _____ if it does not measure what it is supposed to. -
| | | | | | | | | | | | | | | | |
CORRECT ANSWER✔✔-Validity |
How to handle missing data depends on whether they are missing _____. -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-Endogenously |
A national company has developed a new product and is offering it for sale at a
| | | | | | | | | | | | | | | |
discount to introduce it to the market. Randomly surveying customer who
| | | | | | | | | | |
purchased the product in the initial discount period (would/would not) ______
| | | | | | | | | | |
generate a sample representing the population of typical customers. - CORRECT
| | | | | | | | | | |
ANSWER✔✔-Would not |
It is advisable to _____ the acquisition, transformation and analysis tasks. -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-Separate |
One reason reproducibility matters is to protect and support your _____ self. -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-Future |
, Another reason reproducibility matters to guard against _____ and _____. -
| | | | | | | | | | |
CORRECT ANSWER✔✔-error, fraud | |
One important component is describing the exact _____ of your raw input data. -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-source |
You should view a reproducible analysis as a _____ that you should be able to
| | | | | | | | | | | | | | |
produce again and again. - CORRECT ANSWER✔✔-product
| | | | | |
A _____ is a representation of the data structure comprising all of the attributes
| | | | | | | | | | | | | |
of the data and their types. - CORRECT ANSWER✔✔-data schema
| | | | | | | | |
This representation of the data structure identifies the _____ to which each
| | | | | | | | | | | |
observation pertains. - CORRECT ANSWER✔✔-unit of record
| | | | | |
This representation of the data also makes clear what are the _____ that identify
| | | | | | | | | | | | | |
an observation. - CORRECT ANSWER✔✔-key variables
| | | | |
A terabyte is equal to a _____ bytes. - CORRECT ANSWER✔✔-1 trillion
| | | | | | | | | | |
R stores real numbers as a _____ data type and allocates _____ bytes of data to
| | | | | | | | | | | | | | | |
each number. - CORRECT ANSWER✔✔-numeric, 8
| | | | |
A megabyte can store _____ num values, while a terabye can store roughly a
| | | | | | | | | | | | | |
_____ times that. - CORRECT ANSWER✔✔-131072, 1 million
| | | | | | |
