Nanjyo.Tec,  23 Jul 2023

Embracing Best Practices in Data Cleaning: A Crucial Step before Creating Effective Visualizations

new image

Data is the lifeblood of modern businesses. However, just as unrefined oil needs to be processed before it can fuel a car, data too must undergo its refining process before it can drive insightful decisions. The process of refining data, more commonly known as data cleaning, is a critical yet often overlooked aspect of data analysis. Data cleaning, when done correctly, ensures that your visualizations are accurate, trustworthy, and most importantly, meaningful. In this article, we delve into the best practices for cleaning data before creating visualizations, along with the steps on how to go about it.


Why Data Cleaning Matters

Raw data is seldom perfect; it comes with its share of inconsistencies, inaccuracies, and missing values. As data scientists and analysts, our first step should be to refine this data by identifying and correcting these imperfections. Skipping this vital step and proceeding with visualizations can lead to misleading conclusions, compromised business decisions, and even financial losses. Therefore, a commitment to robust data cleaning practices is paramount to ensure the integrity of the subsequent analysis.

Data Cleaning Best Practices

1. Understand your data: This seems obvious but is often overlooked. You must comprehend what each column of your dataset means, the units of measurement, the expected range of values, etc. This will help you identify anomalies and understand the data better.

2. Handle missing values: Data with missing values can skew results and cause inaccuracies. Depending on the context, you might decide to fill in the missing values (imputation) with mean, median, or mode, or maybe decide to discard the records entirely.

3. Check for duplicate records: Duplicates can lead to bias in your analysis. Depending on your requirements, you may want to remove these duplicates to prevent an overrepresentation of certain data points.

4. Standardize your data: If your data comes from multiple sources, ensuring it adheres to a common standard is essential. This might include unifying measurement units, correcting typos or inconsistent capitalization, and standardizing date formats.

5. Validate accuracy: Cross-check your data with an external reliable source to ensure its accuracy.

Steps for Data Cleaning

Now that we know the best practices, let's dive into the step-by-step process of cleaning data:

1. Data auditing: Explore your data, use descriptive statistics and visualization tools to understand its nature, and identify potential errors and inconsistencies.

2. Data cleaning: Implement the best practices discussed earlier. Decide on the strategy to handle missing values, check for duplicate records and remove them if necessary, and standardize the data format and units.

3. Data validation: Use algorithms and validation rules that cross-verify your cleaned data with a reliable external source. This step is to ensure that your data is not just clean, but also accurate.

4. Data reporting: Document every step taken during the data cleaning process. This documentation is crucial to trace any decisions made, providing transparency and reproducibility.

5. Data monitoring: Regularly monitor and update your data. Data cleaning is not a one-time activity; it's an ongoing process.

Data cleaning is an art, and like any art, it requires patience, skill, and practice. When done right, it can make the difference between a mediocre visualization and a great one. A well-cleaned dataset does not just lead to a visually appealing graph but it paves the way for meaningful insights that can drive impactful business decisions.


If you're seeking professional assistance in your data cleaning and visualization endeavors, consider connecting with us at Nanjyo Tec at www.nanjyotec.com. We specialize in helping businesses transform raw data into a powerful decision-making tool. Let's embark on a journey of data-driven success together!

 

Related Articles
Featured Image

Nanjyo.Tec

In this article, we'll explore how Business Intelligence can help your business achieve marketing gr...

Featured Image

Nanjyo.Tec

In this article, we'll explore how businesses can leverage social media analytics to extract valuabl...

Featured Image

Nanjyo.Tec

In this article, we'll delve into why more and more fintechs are hopping on the Power BI bandwagon a...

Featured Image

Nanjyo.Tec

In this article, we explore the significance of data governance in ensuring data accuracy and compli...

Featured Image

None

Welcome to September! Here is the September 2023 on-premises data gateway release (version 3000.190....

Featured Image

None

Welcome to the September 2023 update. We’ve got some updates to editing you data models, row -level...

Featured Image

None

Shared devices are company-owned devices that are shared between employees, often frontline workers,...

Featured Image

None

We’ve enhanced the dataset Refresh History page to help you diagnose and resolve issues more e...

Featured Image

None

We are excited to share that Direct Lake datasets now support calculation groups!...

Featured Image

None

Viewing Power BI reports in OneDrive and SharePoint will be turning on by default in October, 2023. ...

Featured Image

None

We are excited to announce the public preview of shareable cloud connections for datasets and pagina...

Featured Image

None

This blog post describes new changes in GetGroupsAsAdmin API to help administrators deal with timeou...

Featured Image

None

We are announcing the deprecation of some features for Excel workbooks in Power BI workspaces. This ...

Featured Image

None

We are happy to announce that we have just released the August 2023 update for the on-premises data ...

Featured Image

None

Enhance viewing capabilities for Power BI Report Server in the September 2023 release....

Featured Image

None

Keyword based filtering of Fabric tenant settings to enhance admin user experience...

Featured Image

None

Power BI OneDrive and SharePoint integration enabling by default roll out has started...

Featured Image

None

Exclusive opportunity for Women interested in Power BI, led by female trainers in select countries. ...

Featured Image

None

We have some very exciting news to share with you today! We are thrilled to announce that we have ju...

Featured Image

None

The foundation of centralized connection management is granular access control. Power BI always enfo...

Featured Image

None

The model view now has even more to offer! We are excited to share the public preview of the Model e...

Featured Image

None

Welcome to the October 2023 update. We’ve got a lot of great features this month including OneDrive ...

Featured Image

None

You asked, we deliver! The option to create a customized pipeline of 2-10 stages is now available. C...

Featured Image

None

Welcome to October! We have a few new announcements this month, so be sure to read until the end! We...

Featured Image

None

The “GetCapacityTenantSettingOverrides” API is a response to the concerns raised by tena...

Featured Image

None

Welcome to November and a new version of the on-premises data gateway! We are excited to announce a ...

Featured Image

None

Datasets are being renamed to semantic models in Power BI and Fabric. This will make the product cle...

Featured Image

None

We are thrilled to announce the general availability of Microsoft Fabric and the public preview of C...

Featured Image

None

Welcome to the November 2023 update. We’ve got a lot of great features this month including DAX Quer...

Featured Image

None

We’re excited to announce the latest addition to Power BI’s new slicer experience &#8211...

Featured Image

None

Introducing the public preview of the new Explore feature, where users have a lightweight and focuse...

Featured Image

None

Introducing reference labels: the new feature that will rock your new cards! Now you can add custom ...

Featured Image

None

In November 2023 release we added a new fourth view in public preview to Power BI Desktop, the DAX q...

Featured Image

None

Welcome to the Power BI December 2023 update. We’ve got a lot of great features this month. Here are...

Featured Image

None

The latest Power BI Desktop download for December 2023 is now available!...

Featured Image

None

You asked, we delivered! The option to create a customized message for access requests to your Power...

Featured Image

None

DAX query view, released in public preview last month, in the December 2023 Power BI Desktop release...

Featured Image

None

We are updating tenant settings for Dashboard Web Content to be more secure by default. Read this bl...

Featured Image

None

With the model explorer available for editing data models in the Power BI service these semantic mod...

Featured Image

None

Last year was a remarkable one for the Power BI community. We launched Microsoft Fabric, an end-to-e...

Featured Image

None

Join us for the inaugural Microsoft Fabric Community Conference on March 26-28, 2024, at the MGM Gra...

Featured Image

None

We are excited to announce that the Copilot preview is now available to all customers!, Now everyone...

Featured Image

None

We’re excited to announce that dynamic per recipient subscriptions are now available in Preview for ...

Featured Image

None

Here is the on-premises data gateway December 2023 release....

Featured Image

None

New capabilities for Power BI Report Server in the January 2024 release....

Featured Image

None

We are excited to announce that the VNet Data Gateway is now GA! Read the blog to find out more and ...

Featured Image

None

Announcing the availability of the partner solution accelerators for embedded analytics...

Featured Image

None

Microsoft Fabric is now HIPAA compliant...

Featured Image

None

As part of our continued tooling improvements, we have enhanced the experience for creating Direct L...

Featured Image

None

We are excited to announce the public preview of generating measure descriptions with Fabric Copilot...

Featured Image

None

We are very excited to announce the adoption of Tabular Model Definition Language (TMDL) as the sema...

Featured Image

None

This is it. The way you write DAX changes today with the preview of visual calculations!...

Featured Image

None

Welcome to the Power BI February 2024 update. We’ve got a lot of great features this month. Here are...

Featured Image

None

We are excited to announce the general availability (GA) of granular access control for all data con...

Featured Image

None

We are happy to announce a new Direct Lake semantic model property to control Direct Lake behavior....

Featured Image

None

The latest Power BI update is here, and it’s all about new enhancements that you’re sure to enjoy. B...

Featured Image

None

Copilot for Power BI has new capabilities in Public Preview! Users in view mode can now ask about i...

Featured Image

None

We recently made the following Power BI app improvements you asked for: the ability to copy item lin...

Featured Image

None

Announcing the deprecation of creation of machine learning models in Power BI using Dataflows V1...

Featured Image

None

The legacy version of Power BI Apps will no longer be supported starting May 2024. Learn how to upgr...

Featured Image

None

Uncover a host of updates and enhancements to our new card visual reference labels. This February 20...

Featured Image

None

The new Excel and CSV connectors in Fabric allows you to connect to your favorite files and create P...

Featured Image

None

We are excited to announce the February release of the on-premises data gateway!...

Featured Image

None

You can now create tables in Excel online using data from Power BI semantic models....

Featured Image

None

Changing Power BI add-in as snapshot made easy and with more options. You can now change your live d...

Featured Image

None

With the exciting release of Microsoft Fabric and the Fabric capacity SKUs last year, we are consoli...

Featured Image

None

This month, we are excited to announce some new and exciting updates to Copilot; Copilot for consum...

Featured Image

None

Welcome to the March 2024 release of the on-premises data gateway! Read more to learn about our supp...

Featured Image

None

Connect to100+ data sources and create paginated reports....

Featured Image

None

We are excited to announce that Mirroring, previously announced at Ignite in November 2023, is now a...

Featured Image

None

Power BI March 2024 Feature Summary Welcome to the March 2024 update! Here are a few, select highli...

Featured Image

None

Boost your productivity in DAX query view with Copilot to write and explain DAX queries....

Featured Image

None

Earlier this year, we announced Copilot preview for all customers with Premium/Fabric capacity in Po...

Featured Image

None

PowerPoint lets you play a presentation continuously. This is handy when you want to show informatio...

Featured Image

None

Power BI April 2024 Feature Summary Welcome to the April 2024 update. There is more to explore, pl...

Featured Image

None

This is the blog on how to deliver Power BI and paginated report subscriptions to OneDrive and Share...

Featured Image

None

We have some exciting announcements to share regarding Copilot in Microsoft Fabric. The information ...

Featured Image

None

We are excited to announce the April 2024 release of the on-premises data gateway!...

Featured Image

None

Following the announcement of the deprecation of creation of Power BI Automated Machine Learning (Au...

Featured Image

None

Last May, we announced the integration between Power BI and OneDrive and SharePoint (ODSP) that allo...

Featured Image

None

The Power BI integration with Azure Log Analytics has been enhanced through the introduction of a ne...

Featured Image

None

In March we hosted over 4,200 data professionals in Las Vegas for the first-ever Microsoft Fabric Co...

Featured Image

None

We are proud to announce the May 2024 version of the on-premises data gateway. Please continue to se...

Featured Image

None

Power BI May 2024 Feature Summary...

Featured Image

None

One of the biggest opportunities we’re seeing is in accelerating the path to a data-rich culture by ...

Featured Image

None

We are thrilled to announce that the Power Automate visual in Power BI has now reached General Avail...