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How is dirty data handled in data analytics?

July 26, 2022
7 min

Data cleansing is a process of identifying and correcting (or removing) corrupt or inaccurate records from a data set.

It is an essential part of the data preparation process for any data analysis or machine learning operation. It is a tedious process that consumes time, but it's key to ensuring that data is accurately represented before making insights or decisions.

When data is not clean, it can cause several problems.

It can affect the results you get from your analytics, and it might even lead to incorrect conclusions, this could potentially result in costly mistakes. It is important to be aware of the sources of your data and to understand the limitations of what it can tell you.

However, by being aware of the potential for error, you can at least try to minimize its impact on your results.

There are many ways to clean data, and the specific methods will depend on the nature of the data and the types of errors that need to be corrected.

Poor quality data can lead to bias in conclusions drawn from the information, which must then be corrected if an accurate analysis is desired.

Some data problems:

  1. Lack of Data A common issue that many businesses face. While it might seem like the more data you have, the better, this is not always the case. In some situations, a business might have too little data to make reliable conclusions. For example, if a company only has data on a handful of customers, it might not be able to accurately predict customer behavior. Additionally, if a business only has data from a limited time, it might not be able to identify long-term trends.

The solution to this problem is to either supplement your data with other sources or to use statistical methods that can help you conclude from limited data sets.

  1. Inconsistent Data Another common issue, can occur when data is collected from multiple sources that use different methods or when data is inputted manually and is subject to human error.

Inconsistent data can make it harder to receive proper analytics results. The solution to this problem is to clean your data and standardize it so that it is consistent across all sources.

  1. Outdated Data Data can become outdated for a variety of reasons, such as changes in the market or changes in customer behavior. If your data is outdated, it might not be accurate, which could lead to incorrect conclusions from your analytics. The solution to this problem is to supplement your data with more recent data or to use statistical methods that can help you conclude from outdated data sets.
  2. Data Sparsity is another type of poor data that can create issues in your analytics. This term describes a situation where there is not enough data to support your analysis.

This can occur when you are working with a new dataset or when you are trying to analyze a very specific phenomenon.

Data sparsity can lead to inaccurate results and can make it difficult to draw conclusions from your data.

  1. Data Skewness can create issues in your analytics too.

This term describes a situation where your data is not evenly distributed.

This can happen when you are working with a new dataset or when you are trying to analyze a very specific phenomenon. Data skewness can lead to erroneous results and make drawing conclusions from your data challenging.

Some common methods include:

  • Remove invalid data points: This could involve identifying and removing outliers or invalid data points that do not conform to a certain format or range.
  • Impute missing values: This involves replacing missing values with a plausible estimate based on other available data.
  • Standardize data formats: This could involve converting all data to a common format.
  • Correct errors: This could involve identifying and correcting errors in the data, such as typos or incorrect values.
  • Data that has been collected from multiple sources is often more reliable than data from a single source.

This is because errors tend to cancel each other out when data is combined from different sources.

When data is collected over time, it can be used to track changes and trends.

This data can be used to improve the accuracy of predictions by using machine learning algorithms.

It is important to remember that not all data is created equal. Some data is more reliable than others. When dealing with filthy data, it is important to use your best judgment to determine which data points are most likely to be accurate.

  • In some cases, the best solution might be to simply discard the data that is causing problems.

This is not ideal, but it is sometimes necessary in order to avoid skewing your results.

Additionally, you might want to consider collecting new data that is more accurate. This can be difficult and expensive, but it is often worth it in the long run.

Conclusions Data is becoming increasingly important in the business world. However, the challenge is to effectively use this data to improve business decisions and operations.

Data analytics can provide insights that help organizations improve their performance.

However, it is important to keep in mind that data analytics is not a panacea. Data can be inaccurate and misinterpreted, which can lead to wrong conclusions. Additionally, data analytics require significant investments in terms of time, money, and resources.

The article was an attempt to provide some insights into the data quality issues and how to deal with them.

It also touched upon the issue of cleaning data before running analytics on it.

It is always important to understand the limitations of your data and be prepared for any problems that may arise as a result of it.

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