2025/2026
Data analysts work in a variety of different ways, depending on the project. Data
analysts, at a minimum, do what for their data science team? - correct answer Bring
data to the team for additional analysis.
Analysts engage in all of the following activities, except: - correct answer changing data
values
Why does data science have such a broad definition? - correct answer The data, tools,
and skills required all evolve.
Why are data analyst roles defined so differently? - correct answer Everyone defines
data differently.
What are the processes of data analysis? - correct answer inspecting, cleaning,
transforming, and modeling data to inform decision-making
When might you start to identify yourself as a data analyst? - correct answer when you
find ways to improve processes through data
What kind of join requires that there is a record in both of the joined tables/columns? -
correct answer inner
If you want to improve a process and create better data reports from existing ones, what
is something you should ask for (or create if it doesn't exist)? - correct answer Workflow
Diagram
The result of a(n) _____ join for two tables/columns/etc. always contains all records of
the "left" table, even if the join-condition does not find any matching record in the "right"
table. - correct answer left outer
Complete the analogy that compares food menus to data. Dishes make up menus;
_____ make(s) up _-___. - correct answer data; reports
All of the following are common actions when cleaning data, except: - correct answer
altering (data should be reconfigured in order to meet goals)
Why should a workflow diagram take you step-by-step through a process? - correct
answer because it is easy for people to miss a step
Which scenario is an example of standardizing data? - correct answer listing all states
with a two-letter abbreviation
Getting data to a _____ format can help you do more with it. - correct answer raw