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My D204 WGU Study Set (kencollier3) Questions and answers
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My D204 WGU Study Set (kencollier3) Questions and answers
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MyD204
WGU
Study
Set
(kencollier3)
Data
quality
is
measured
in
terms
of
this:
-
correct
answer-Uniqueness
and
relevance
For
example
businesses
may
be
able
to
use
a
API
to
pull
in
data
in
what
kind
of
format?
What
level
of
structure
is
the
data?
-
correct
answer-JSON
Semi-structured
data
ggplot2,
tidyverse,
caret
are
essential
libraries
of
which
tool?
-
correct
answer-R
Trends
is
an
example
of
what
kind
of
data?
-
correct
answer-Open
Data
-->
Social
Media
How
and
where
should
the
safety
margin
(halfway
amount
between
average
time
completed
and
slowest
possible
time
completed)
be
added?
-
correct
answer-Spread
throughout
the
critical
path
How
is
law
confined?
-
correct
answer-It's
confined
to
the
territory
or
the
place
that
created
it,
not
the
technology.
If
an
analyst
wants
to
help
create
an
online
store
that
intelligently
recommends
certain
products
for
customers
to
buy,
what
type
of
analysis
would
they
be
focusing
on?
-
correct
answer-Predictive
(because
they
are
predicting
FUTURE
habits)
If
you're
needing
to
crash
a
project
(speed
up
the
project
to
get
it
done
on
schedule),
what
are
three
ways
to
do
it?
-
correct
answer-Money
up
Quality
down
Overlapping
tasks
In
what
phase
does
the
analyst
deal
with
the
following:
Central
Tendency/
Measures
of
center
(e.g.,
mean,
median,
mode),
variability
(e.g.,
standard
deviations
and
quartiles)
and
distributions
(e.g.,
normal,
skewed,
etc)
Identify
basic
correlations
between
variables
Pattern
discovery
-
correct
answer-Data
exploration/Exploratory
Data
Analysis(EDA)/Descriptive
Statistics
In
what
phase
does
the
analyst
deal
with
the
following:
Creating
training
and
testing
datasets
to
build
models
from
Identify/detect
patterns
Determine
if
groups
(clusters)
exist
in
data
Classify
data
into
groups Create
models
that
"learn"
and
improve
(e.g.,
machine/deep
learning,
AI,
etc)
-
correct
answer-Data
Mining/Machine
Learning/AI/Supervised,
Unsupervised
Models
In
what
phase
does
the
analyst
deal
with
the
following:
Estimate/project
future
values
or
likelihood
of
an
event.
Extend
correlations
found
in
EDA
to
mathematical
models
Predict/determine
output
values
based
on
input
values
Cross-validation
of
predictive
models
to
ensure
accuracy.
-
correct
answer-Predictive
Modeling/Data
Modeling/Correlation
based
models/Regression
models/Time
Series
In
what
phase
does
the
analyst
deal
with
the
following:
Fixing
improperly
formatted
values
Dealing
with
duplicates,
missing
data,
and
outliers
Data
reduction
-
correct
answer-Data
cleaning/wrangling/scrubbing/munging
In
what
phase
does
the
analyst
deal
with
the
following:
Gather/collect
data
from
a
variety
of
sources
Provide
structure
to
data
accessible
via
relational
databases
(SQL)
Build
data
pipeline
(ETL)
Use
of
API
to
download
data
from
an
external
source
-
correct
answer-Data
acquisition
In
what
phase
does
the
analyst
deal
with
the
following:
Tell
a
story
with
data
Provide
a
summary
of
analytic
analysis
Provide
insights
to
stakeholders
Create
insightful
graphs
that
showcase
trends
and
forecasts
-
correct
answer-Reporting
and
visualization/Dashboards
In
what
phase
does
the
analyst
identify
the
stake
holders
and
research
questions?
-
correct
answer-Business
Understanding/Planning/Discovery
Read
this
IRAC
story
snippet.
What
step
in
the
IRAC
process
is
being
performed?
"Privacy
laws
inhibit
the
use
of
personal
information
for
corporate
use"
-
correct
answer-Rule
-
state
the
relevant
case
laws
and
statutes
Read
this
IRAC
story
snippet.
What
step
in
the
IRAC
process
is
being
performed?
"Since
it
was
based
solely
on
shopping
patterns
and
not
private
information,
there
was
no
legal
breach
or
violation"
-
correct
answer-Application
-
Apply
relevant
rules/laws
to
the
facts
that
created
the
issue
Read
this
IRAC
story
snippet.
What
step
in
the
IRAC
process
is
being
performed?
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