D467 EXPLORING DATA STUDY GUIDE 2026
TESTED QUESTIONS AND PRACTICE
SOLUTION GRADED A+
◉ What are the key characteristics of a text, or string, data type?
Select all that apply.
Contains textual information
Only two possible values
Sequence of characters and punctuation
Has numerical percentages.
Answer: Contains textual information
Sequence of characters and punctuation
◉ In a data table, where are fields contained?
Rows
Columns
Favorites
Charts.
Answer: Columns
,◉ When using long data, each subject has data in multiple rows. This
is because each row represents what?
Data in different formats
True or false data points
One observation per subject
Multiple values.
Answer: One observation per subject
◉ What strategy do data professionals use in order to ensure
unbiased sampling?
Use random sampling during data collection
Write survey questions that encourage specific responses
Store data in a spreadsheet
Skew results in a certain direction.
Answer: Use random sampling during data collection
◉ Fill in the blank: Bias is a _____ preference in favor of or against a
person, group of people, or thing.
,conscious or subconscious
sensible or insensible
fair or unfair
standard or substandard.
Answer: conscious or subconscious
◉ Which of the following are examples of sampling bias? Select all
that apply.
A teacher gives higher grades to essays written in their own writing
style.
A clinical study includes three times more men than women.
A survey of students does not include homeschooled students.
An election poll only interviews people with college degrees..
Answer: A clinical study includes three times more men than
women.
A survey of students does not include homeschooled students.
An election poll only interviews people with college degrees.
◉ What is the term for the tendency to search for or interpret
information in a way that validates pre-existing beliefs?
Sampling bias
, Confirmation bias
Observer bias
Interpretation bias.
Answer: Confirmation bias
◉ Which of the following terms are also ways of describing observer
bias? Select all that apply.
Perception bias
Research bias
Spectator bias
Experimenter bias.
Answer: Research bias
Spectator bias
Experimenter bias
◉ Fill in the blank: Data is considered _____ when it is accurate,
complete, and unbiased information that has been vetted and
proven fit for use.
original
current
TESTED QUESTIONS AND PRACTICE
SOLUTION GRADED A+
◉ What are the key characteristics of a text, or string, data type?
Select all that apply.
Contains textual information
Only two possible values
Sequence of characters and punctuation
Has numerical percentages.
Answer: Contains textual information
Sequence of characters and punctuation
◉ In a data table, where are fields contained?
Rows
Columns
Favorites
Charts.
Answer: Columns
,◉ When using long data, each subject has data in multiple rows. This
is because each row represents what?
Data in different formats
True or false data points
One observation per subject
Multiple values.
Answer: One observation per subject
◉ What strategy do data professionals use in order to ensure
unbiased sampling?
Use random sampling during data collection
Write survey questions that encourage specific responses
Store data in a spreadsheet
Skew results in a certain direction.
Answer: Use random sampling during data collection
◉ Fill in the blank: Bias is a _____ preference in favor of or against a
person, group of people, or thing.
,conscious or subconscious
sensible or insensible
fair or unfair
standard or substandard.
Answer: conscious or subconscious
◉ Which of the following are examples of sampling bias? Select all
that apply.
A teacher gives higher grades to essays written in their own writing
style.
A clinical study includes three times more men than women.
A survey of students does not include homeschooled students.
An election poll only interviews people with college degrees..
Answer: A clinical study includes three times more men than
women.
A survey of students does not include homeschooled students.
An election poll only interviews people with college degrees.
◉ What is the term for the tendency to search for or interpret
information in a way that validates pre-existing beliefs?
Sampling bias
, Confirmation bias
Observer bias
Interpretation bias.
Answer: Confirmation bias
◉ Which of the following terms are also ways of describing observer
bias? Select all that apply.
Perception bias
Research bias
Spectator bias
Experimenter bias.
Answer: Research bias
Spectator bias
Experimenter bias
◉ Fill in the blank: Data is considered _____ when it is accurate,
complete, and unbiased information that has been vetted and
proven fit for use.
original
current
