Power Query Data Transformation

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Questions and Answers

What is the purpose of the 'Applied Step' group in the Power Query Editor?

To show the final output of all transformations

To store queries that were previously executed

To list all errors encountered in the query

To store recent applications and transformations (correct)

Which function does NOT work in the Power Query Editor to undo a step?

Ctrl + Z (correct)

Delete key

Backspace

Ctrl + Y

In the Merge Column Dialog Box, which action must be performed to combine columns with a space separator?

Only type the new column name

Select a special character from the list

Select Space under the Separator Group (correct)

Choose the Columns from the Preview area

What happens when 'Close & Load' is selected from the Power Query Editor?

Data transfers to a new worksheet (D) Signup and view all the answers

Which delimiter is NOT commonly used when splitting columns in Power Query?

Dot (B) Signup and view all the answers

To perform a split column by delimiter, which menu option should be accessed?

Transform Tab > Split Column (D) Signup and view all the answers

Which method is correct for starting the process to transfer data to the Power Query Editor?

Click on From Table under the Data Menu (B) Signup and view all the answers

Which of the following functions allows for extracting specific portions of text from a string?

Left, Right, and Mid functions (D) Signup and view all the answers

What is the first step to separate the year from the original data?

Click on the Add Column Tab (B) Signup and view all the answers

How is the data transferred to Power Query Editor?

By using the From Table option in the Data Menu (D) Signup and view all the answers

Which option is used to find the start of a quarter?

Quarter under From Date & Time (B) Signup and view all the answers

What calculation is performed to determine which day of the quarter a date falls on?

Subtract Start of Quarter from Order Date (C) Signup and view all the answers

What step is taken to determine the day of the year for a specific date?

Subtract start of the year from order date (D) Signup and view all the answers

Which feature allows for converting normal data to a Date & Time format?

Data Menu (D) Signup and view all the answers

What option should be selected to extract the start of the month?

Click on Start of Month (C) Signup and view all the answers

What is the first step to calculate age using the date of birth?

Access the Data Menu (C) Signup and view all the answers

What happens to normal dates when they are transferred to Power Query Editor?

They are converted to date and time format. (A) Signup and view all the answers

What is the purpose of the Trim function in Power Query?

To remove unwanted spaces from data (C) Signup and view all the answers

Which step is taken to convert a column to a normal date format in Power Query?

Click on the icon next to the Order Date heading and select Date. (B) Signup and view all the answers

What option should you select to find the age calculated in days from a date in Power Query?

Duration (A) Signup and view all the answers

Which option correctly describes how to change text to uppercase in Power Query?

Select the text column, go to Transform menu and choose Format > Uppercase (D) Signup and view all the answers

How can you quickly change a column type to date format using a shortcut in Power Query?

Select the column, right-click it, then choose Change Type > Date. (C) Signup and view all the answers

What is one major benefit of using the Power Query Editor?

All actions performed are automatically recorded (D) Signup and view all the answers

Which of the following functions would you use to convert a column of text to lowercase?

Select Text Column > Transform > Format > Lowercase (D) Signup and view all the answers

In order to find 100% of a number like 1500 in Power Query, which option needs to be accessed?

Percent of option under Add Column > From Number. (B) Signup and view all the answers

Where do you begin when you want to work with text data in Power Query?

Select any cell and navigate to Data menu > From Table Option (C) Signup and view all the answers

What is the purpose of the Modulo operation in Power Query?

To determine the remainder of a division operation. (C) Signup and view all the answers

What must be done to append data from multiple worksheets into one sheet in Power Query?

Use the Append Queries feature in Power Query. (D) Signup and view all the answers

How does Power Query handle multiple transformations applied to data?

It records each transformation step separately (B) Signup and view all the answers

Which menu allows you to access the option to split a column by a delimiter in Power Query?

Transform menu (D) Signup and view all the answers

What dialog box appears when you need to specify the value required for the Percent of calculation?

Percent of Dialog Box (A) Signup and view all the answers

What is the first step to create a table for text data in Power Query?

Select a cell and choose Data menu > From Table (C) Signup and view all the answers

What is the correct term used for data that is organized vertically in a master database?

Append Query (B) Signup and view all the answers

Which option must be selected from the Data Menu to start creating a new query from an Excel worksheet?

From File (B) Signup and view all the answers

What is the first step to append queries in Power Query Editor?

Append Queries as New (D) Signup and view all the answers

How can you create an Excel table before transferring it to Power Query?

Select any cell and press CTRL + T (A) Signup and view all the answers

Where in the Power Query Editor can you find the queries section?

Extreme left side corner (A) Signup and view all the answers

In which menu is the option to give a proper table name located?

Design Menu (C) Signup and view all the answers

What indicates that your data has been successfully transformed into a table in Excel?

Design Menu activates (A) Signup and view all the answers

Which of the following is NOT a menu accessible in the Power Query Editor?

Properties (D) Signup and view all the answers

Study Notes

NETT ZONE COMPUTER EDUCATION CENTRE Overview

NETT Zone Computer Education Centre is an autonomous body registered under the Government of West Bengal.
Registration is based on the Indian Trust Act 1882 and is inspired by the National Task Force IT & SD.
Registered under the Ministry of MSME, Government of India.
Quality Management System certified under ISO 9001:2015.

Power Query - Text Functions

The Power Query Editor offers various text functions for manipulating text data.
Trim Function: Removes unwanted spaces from data.
Case Conversion: Converts text to uppercase or lowercase.
Column Merging: Combines first name and last name using the Merge Column feature.
All transformations in Power Query are recorded in the Applied Steps section of the Query Settings.

Splitting Columns by Delimiter

Delimiters may include spaces, commas, or semicolons.
Data is transferred to Power Query by creating a table and selecting the Split Column feature by delimiter.
Split options include predefined delimiters or entering custom ones.

Using Left, Right, and Mid Functions

Extract specific parts of text data based on position.
Data can also be separated into year, month, and day from date values via the Add Column feature.

Extracting Start & End of Month, Quarter, and Year

Convert dates into different formats using Power Query.
Extract start or end dates of months, quarters, or years through date manipulation functions.

Calculating Age from Date of Birth

In Power Query, calculate age by subtracting birth date from the current date, resulting in the total number of days.
Convert this value to years.

Finding Differences Between Two Dates

Calculate durations between dates using the Subtract Date function in Power Query.
Facilitate quick data type changes by right-clicking on date columns.

Working with Percentages and Modulo

Determine percentages and calculate remainders using the Add Column feature.
Use options in Power Query to perform these calculations on data columns.

Appending Multiple Worksheets into One Sheet

Combine data from multiple sheets into a master database by using the Append Query function.
Arrange data vertically for appending and horizontally for merging.
Utilize the Combine and Append queries feature in Power Query.

Creating a Power Query Report with Pivot Tables

Excel data must first be formatted as a table to utilize Power Query features.
Use the Power Query Editor to transform and manage data before creating a pivot table.

The Power Query Editor consists of four main menus: Home, Transform, Add Column, and View.
The Queries section displays all created tables, while the Query Settings allow for further management of table properties.

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Description

This quiz focuses on the process of transferring and converting data in Power Query Editor. It explains how normal dates are handled and modified into date and time formats. Participants will learn about the steps involved in changing column types and adding new columns using Power Query.