Many data scientists, business professionals, and machine learning engineers do not realize that some of their long-held beliefs are misconceptions. Here is the truth about 15 of the most commonly accepted myths regarding data quality.
1. Other Companies Do Not Struggle With Data Quality
Unbelievable metrics and market valuations often showcase the promising business outcomes data quality practices can generate. Many enterprise and small business leaders believe they are doing something wrong since they do not achieve the same results.
Many companies struggle with maintaining data quality. According to one global survey,
2. Data Quality Is Only for Enterprises
A common misconception is data quality practices, and policies are only for enterprises. In reality, small business leaders should hold themselves to the same standards even if they have less to manage. To generate actionable insights, they must adequately clean, transform, and analyze information regardless of volume.
3. Poor Data Quality Is Nothing to Worry About
Poor data quality leads to unactionable insights and financial losses. In 2023, industry professionals reported it
4. High-Quality Data Is Always Accurate
While many business professionals assume a thorough cleaning guarantees accurate results, data can be unreliable. Unexpected events and emerging details can make output inaccurate at any time. While companies should keep using insights for guidance, they should not rely on it as their sole driver.
5. Most Issues Stem From Data Entry
Many people wrongly assume sourcing and entry are responsible for quality issues. In reality, someone could collect, merge, and scrub data to perfection but still have problems. Timeliness, relevancy, and consistency are conditional since minor changes can happen whenever — making clean information outdated, irrelevant, or inconsistent.
6. Preparation and Strategization Aren’t Necessary
Many business professionals assume they can navigate issues as they arise, choosing to forgo preparation. This choice leads to poor data quality, which causes enterprises to
The concept of preparation also applies to machine learning applications. Data scientists and machine learning engineers should consider how to align their goals with their data sourcing, collection, and transformation techniques before beginning development. This way, they avoid costly mistakes.
7. Data Quality Is the IT Team’s Responsibility
Although the IT team shoulders most of the technical aspects of data quality, the duty should not be theirs alone. Since their work determines insight accuracy, their accomplishments decide business outcomes. Organization leaders — even ones in purportedly unrelated departments — should maximize their chances of success by taking on more responsibility.
8. All Data Is Valuable and Worth Analyzing
Sometimes, seemingly valuable sources aren’t worth the effort. In fact, many companies have too many — more than they know what to do with. In these cases, they waste effort merging, cleaning, and transforming data, which ends up unanalyzed. Professionals’ time is better spent on more minor, impactful responsibilities.
9. Data Cleaning Only Needs to Happen Once
Data is constantly changing, so professionals should not expect to clean it once and be done with it. Even if they automate the process, human perception is a necessity. They must be able to catch anything from a minor entry error to a categorization change before it impacts insights.
The concept of ongoing maintenance is especially applicable to machine learning applications. Information changes over time, potentially introducing errors despite a thorough initial cleaning. Professionals must scrub repeatedly to maintain prediction accuracy and performance.
10. 100% Data Quality Is the End Goal
Perfection is generally unachievable in any respect. In fact,
11. Internal Data Does Not Need Cleaning
Many professionals mistakenly assume information collected internally will not need cleaning. Realistically, it is just as full of errors as other data sets. Even something as simple as recording “first name, last name” instead of “last name, first name” can cause significant inconsistencies.
The same concept applies to synthetic data sets generated by algorithms for machine learning applications. While they might seem error-free at first glance, there is a high likelihood of inconsistencies, duplicates, and missing values.
12. Having Quality Data Guarantees Success
Data scientists generally assume their efforts will result in success. Unfortunately, the reality is sometimes different. While data-driven insights are valuable, they cannot guarantee positive business outcomes. A solid strategy and organization-wide support are essential to maximize positive outcomes.
13. Data Cleaning Won’t Take Much Time
Cleaning is an unbelievably time-intensive task — especially when dealing with large volumes of data. Some claim data scientists
14. Minor Errors Are Insignificant
Some people mistakenly assume a handful of duplicates or missing values are acceptable. Although data scientists cannot achieve perfection or should strive for it, they should not accept errors. Ignoring minor errors to save time can ultimately result in poor insights and unhappy clients.
15. Data Cleaning Should Take Priority
While professionals prioritize data cleaning, problems often arise from poor management. Experts believe companies
Professionals Should Quash These Data Quality Myths
These data quality myths negatively impact business outcomes, return on investment, reputation, and client satisfaction. Professionals should do their best to quash any misconceptions in their organization.