D 467 EXPLORING DATA ACTUAL EXAM TEST PAPER FULL QUESTIONS CORRECT
RESPONSES
Question:
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
Question:
In a data table, where are fields contained? Rows Columns Favorites Charts.
Answer:
Columns
Question:
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
Question:
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
Question:
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
Question:
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.
Question:
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
Question:
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
, Question:
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 comprehensive reliable.
Answer:
reliable
Question:
Which of the following are usually good data sources? Select all that apply. Vetted public datasets
Social media sites Governmental agency data Academic papers.
Answer:
Vetted public datasets Governmental agency data Academic papers
Question:
To determine if a data source is cited, ask which of the following questions? Select all that apply.
When was this data last refreshed? Who created this dataset? Is this dataset from a credible
organization? Has this dataset been properly cleaned?
Answer:
When was this data last refreshed? Who created this dataset? Is this dataset from a credible
organization?
Question:
A junior data analyst learns that the dataset they have been given is six years old. After looking into
this further, they also discover that the age of the data is making the information irrelevant to their
project. What good data source principle have they used to evaluate the dataset? Comprehensive
Original Reliable Current.
Answer:
Reliable
Question:
RESPONSES
Question:
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
Question:
In a data table, where are fields contained? Rows Columns Favorites Charts.
Answer:
Columns
Question:
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
Question:
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
Question:
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
Question:
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.
Question:
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
Question:
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
, Question:
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 comprehensive reliable.
Answer:
reliable
Question:
Which of the following are usually good data sources? Select all that apply. Vetted public datasets
Social media sites Governmental agency data Academic papers.
Answer:
Vetted public datasets Governmental agency data Academic papers
Question:
To determine if a data source is cited, ask which of the following questions? Select all that apply.
When was this data last refreshed? Who created this dataset? Is this dataset from a credible
organization? Has this dataset been properly cleaned?
Answer:
When was this data last refreshed? Who created this dataset? Is this dataset from a credible
organization?
Question:
A junior data analyst learns that the dataset they have been given is six years old. After looking into
this further, they also discover that the age of the data is making the information irrelevant to their
project. What good data source principle have they used to evaluate the dataset? Comprehensive
Original Reliable Current.
Answer:
Reliable
Question:
