D467 Exploring Data - Set 5 - Part 1

Test your knowledge of technical writing concepts with these practice questions. Each question includes detailed explanations to help you understand the correct answers.

Question 1: What is the role of "data governance" in an organization?

Ensuring the formal management of a company's data assets

Encrypting data before sharing

Organizing data for public use

Removing duplicate records from a dataset

Question 2: What is the SQL SELECT DISTINCT statement used for?

To filter data based on specific criteria

To remove duplicate rows from the result set

To add new rows to a table

To update existing records

Question 3: What is "data integrity"?

The accuracy, completeness, and consistency of data throughout its lifecycle

The process of anonymizing sensitive data

A method for encrypting data before sharing

A technique for merging multiple datasets into one

Question 4: In statistics, what does "sampling bias" lead to?

Results that are not representative of the population

A higher confidence level

Reduced variability in data

Greater precision in results

Question 5: What is "data warehousing"?

The process of storing large amounts of data in a centralized location for analysis

The conversion of data into a different format

The encryption of sensitive data

The merging of two or more datasets into one

Question 6: What is the purpose of the SQL HAVING clause?

To filter records based on aggregate functions

To retrieve data from a database

To join two or more tables

To update records in a table

Question 7: In data analysis, what is the "median"?

The average of all values in a dataset

The value that occurs most frequently in a dataset

The middle value when a dataset is ordered from least to greatest

The difference between the highest and lowest values in a dataset

Question 8: In SQL, what does the INSERT INTO statement do?

Updates existing records in a table

Adds new records to a table

Deletes records from a table

Retrieves data from a table

Question 9: What is "data ethics"?

Well-founded standards of right and wrong that dictate how data is collected, shared, and used

The legal requirements for collecting and storing data

The rules for anonymizing sensitive data

The guidelines for formatting data in spreadsheets

Question 10: What is "metadata"?

Data that provides information about other data

Data that is used for encryption

Data that has been anonymized

Data that is used for statistical analysis

Question 11: What is the function of the SQL COALESCE function?

To return the first non-null value in a list of expressions

To remove duplicates from a result set

To sort records in ascending or descending order

To filter records based on specific criteria

Question 12: In data analysis, what is "continuous data"?

Data that can take on any value within a range

Data that can only take on specific, discrete values

Data that is used for encryption

Data that describes qualities or characteristics

Question 13: What is the purpose of the VLOOKUP function in a spreadsheet?

To search for a value in a column and return a corresponding value from another column

To sort data in ascending order

To remove duplicates from a range

To calculate the sum of values in a range

Question 14: What is the significance of a "confidence level" in statistics?

It represents the probability that a sample accurately reflects the population

It calculates the mean of a dataset

It measures the total sum of all data points

It identifies outliers in a dataset

Question 15: In a relational database, what is a "foreign key"?

A field that uniquely identifies each record in a table

A field that links records in one table to records in another table

A field that contains duplicate values

A temporary key used for sorting data

Question 16: What does the TRIM function do in a spreadsheet?

Removes leading, trailing, and repeated spaces from text

Joins two or more text strings together

Splits a text string into multiple cells

Finds and replaces specific values in a range

Question 17: What is "data anonymization"?

Removing personally identifiable information from a dataset

Encrypting data before transmission

Filtering records based on specific criteria

Aggregating data from multiple sources

Question 18: In data ethics, what is the principle of "consent"?

The requirement that individuals must agree to how their data will be used before it is collected

The encryption of sensitive data before it is shared

The anonymization of data before analysis

The removal of data from a dataset

Question 19: What is a "pivot chart"?

A chart that is created from the fields in a pivot table

A chart that displays real-time data from multiple sources

A chart that filters data based on specific criteria

A chart that combines multiple datasets into one

Question 20: What does the LEN function do in a spreadsheet?

Counts the number of characters in a text string

Joins multiple text strings into one

Removes leading spaces from a text string

Splits a text string into multiple cells

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