What is data analysis? Method and Techniques

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Today’s businesses require whatever advantage they can get to stay competitive in the changing business landscape. Companies nowadays are operating with narrower margins for error due to challenges such as quickly moving markets, unstable economic conditions, evolving political environments, unpredictable consumer attitudes, and even worldwide pandemics.

Data analysis is one of the ways businesses are utilizing to better understand the current market and predict the future before making business decisions. Making wise decisions while attempting to define data analysis can increase the chances of success for businesses that wish to remain in operation and grow. So how do people or organizations decide the right decisions to make? It is by gathering as much pertinent, relevant data as possible and utilizing it to guide their judgments. Before making significant decisions, advantages, disadvantages, and consequences are considered. Also, it is imperative to only rely on judgments based on accurate and unbiased data.

What is Data Analysis?

Data analysis is modifying, processing, and cleansing raw data to obtain valuable, pertinent information that supports commercial decision-making. The process offers helpful insights and data, frequently displayed in charts, graphics, tables, and graphs, which helps to perceive the information faster and easier and lessens the risks associated with decision-making.

Every time we decide on our everyday lives, we may observe a simple illustration of data analysis by assessing what has happened in the past or what will happen if we take that action. In its simplest form, the data analysis process involves looking at the past or future and making a choice based on that analysis.

What is the Data Analysis process?

There is a process to follow while evaluating data to get the necessary conclusions. There are five main steps in analyzing data. Here is a list of the required methods. We will go over each of these in greater detail later in the post, but this will provide you with the background.


Before getting your hands dirty with data; you must determine why you need it. In the identification phase, you decide what questions you’ll need to have ready to go. How do customers perceive our brand, for instance? Or which kind of packaging appeals to our target clients more? After deciding on the questions, you can start the following phase.


After establishing a goal; you can gather the data required for analysis. The sources used to acquire the data will dictate how in-depth the research is. Therefore, this phase is crucial. Primary sources, sometimes referred to as internal sources, are where data collecting begins. Typically, this is structured data obtained from applications like CRM, ERP, marketing automation, and others. These sources provide customer data, budgets, sales gaps, and other topics. Next are secondary sources, sometimes referred to as outside sources. Their data may be acquired from various sources and is organized and unstructured. For instance, you might take information from review sites or social network APIs if you want to do a sentiment analysis of consumer attitudes about your business.


When you obtain the required data, please clean it up and set it aside for analysis. Not all of the data you get will be valuable. You’ll probably end up with duplicate or improperly formatted data if you gather significant volumes of data in various forms. To prevent this, you must remove all blank spaces, duplicate entries, and formatting problems from your data before you begin working with it. By doing this, you may prevent using inaccurate data in your analysis.


Analyzing and altering the data is one of the final processes in the data analysis process. There are several ways to accomplish this.

  • Data mining, referred to as “knowledge discovery inside databases,” is one method. Data mining methods such as clustering analysis, anomaly detection, association rule mining, and others may reveal previously undetectable underlying patterns in the data.
  • Decision-makers and business users create data visualization and business intelligence products. These solutions include quickly understandable reports, dashboards, scorecards, and visualizations.
  • Predictive analytics, one of the four data analytics employed today, may also be used by data scientists (descriptive, diagnostic, predictive, and prescriptive). The predictive analysis thus analyzes the projects into the future to foretell what is most likely to occur in response to a business problem or query.


One of the most crucial procedures is to analyze your findings. In this phase, the researcher develops action plans in light of the results. You would know, for instance, if your customers like red or green packaging made of plastic or paper. You can also identify certain constraints at this point and attempt to overcome them.

Data Analysis Method

There are two main methods of data analysis qualitative analysis and quantitative analysis.

Qualitative Analysis

This method primarily provides answers to “why,” “what,” and “how” inquiries using quantitative tools, including surveys, attitude scaling, expected outcomes, and more. Such analysis typically takes the form of written works and stories, which may also contain audio and visual materials.

Quantitative Analysis

Numeric terms are used to express the results of the investigation. Here, the data are presented as measurement scales and extended to further statistical processing.

The other techniques are:

Text Analysis

For text analysis, extensive collections of the text version of data are arranged to make them manageable for text analysis, commonly known as text mining in the industry. As a result, you can extract the data that is pertinent to your business and utilize it to create actionable insights that will help you if you carefully follow this data purification procedure.

Modern technologies accelerate the implementation of text analytics. You can carry out sophisticated analytical procedures like sentiment analysis since machine learning and clever algorithms work well together. Using this method, you may evaluate a text’s objectives and feelings, such as whether it’s good, harmful, or neutral, and assign a score based on several important aspects and categories to your business. For example, sentiment analysis to track the reputation of brands and products and gauge how successfully you are serving your customers.

Statistic Analysis

Data collection, interpretation, and validation are all part of statistics. Using statistical analysis to quantify the data involves running several procedures. Descriptive data, such as surveys and observational data, are included in quantitative data. Another name for it is descriptive analysis. Numerous tools, such as SAS (Statistical Analysis System), SPSS (Statistical Package for the Social Sciences), Stat Soft, and others, are included for statistical data analysis.

Predictive Analysis

Using predictive analysis, you may determine what is most likely to occur. Analysts forecast future occurrences by considering trends observed in older data and recent happenings. While there is no such thing as an entirely correct forecast, the chances of an accurate forecast increase if the analysts have a ton of specific information and the will to investigate it properly.

Prescriptive analysis

The prescriptive analysis uses all the knowledge discovered using various data analysis methods. Sometimes more than one insight is needed to address a problem. You can use more than one form of research to solve the problem.

Diagnostic Analysis

A diagnostic analysis explains what occurred. Analysts utilize diagnostic research to find patterns in data by concluding statistical analysis (more on that later). Analysts should seek similar ways from the past and, ideally, use those answers to address the problems now.

  • After statistical analysis, analysts must check for anomalies since such data raise issues that cannot be answered by simply looking at the data.
  • Analytics (discovery) analysis: Data sources help analysts understand anomalies. At this point, analysts typically need to look for trends outside of the present data sets. Finding links and determining whether they are causative requires gathering information from other sources.
  • Determine Causal Links: By examining possible causes of the identified anomalies. Filtering, regression analysis, time-series data analytics, and probability theory can all help reveal hidden tales in the data.

Data Analysis Techniques

Depending on the subject at hand, the type of data, and the quantity of data acquired, there are several methodologies for data analysis. Each focuses on incorporating new data, uncovering new knowledge, and digging deeper to translate data into decision-making criteria. As a result, the various data analysis methods are divided into the following categories:

Techniques based on Mathematics and Statistics

Descriptive Analysis

A crucial initial step in undertaking statistical analysis is descriptive analysis. It gives us a sense of the distribution of the data, aids in detecting outliers, and enables us to spot relationships between variables, preparing the data for further statistical analysis.

Dispersion Analysis

Dispersion analysis is the distribution of data collection across a surface. Data analysts may use this method to evaluate the variability of the items under investigation.

Regression Analysis

Regression analysis is one of the sector’s most popular data analysis methods. This approach allows us to see the connection between two relevant factors. At their heart, all of them examine how one or more independent variables affect the dependent variable. We must first plot the data on a chart to determine whether or not there is a link between the variables. If there is, it will be clear from the chart. This method is employed in data mining to forecast the values of a variable in a specific dataset. Regression modeling comes in a variety of forms. Linear, logistic, and multiple regression are a few of them.

Factor Analysis

This method aids in figuring out whether a group of variables is related to one another. The patterns in the relationships between the initial variables are described by other factors or variables revealed by this procedure. The use of factor analysis quickly advances to helpful grouping and classification techniques.

Discriminant Analysis

It is a data mining classification approach. Based on varying measures, it identifies the various spots in various groupings. Said, it determines what distinguishes two groups from one another, which aids in discovering new things.

Time Series Analysis

A data analysis method known as time series analysis works with time-series data or trend analysis. Data in a sequence of specific time intervals or periods is known as a time series. However, the majority of measurements are carried out with time.

Techniques based on Artificial Intelligence and Machine Learning

Artificial Neural Network

A neural network is a programming model that uses the brain metaphor to handle information. A system known as an artificial neural network adapts its structure to the information passing through it. ANNs are incredibly accurate and can handle noisy data. Commercial categorization and forecasting applications are pretty reliable as a result.

Decision Tree

The challenges with decision-making are often visualized as flow charts with branches for potential solutions in a decision tree analysis, a graphical representation with a tree-like structure.

For example, when using the Top-Down technique, decision trees have an initial decision node at the top, followed by branches based on the first decision node’s response, and so on, until the tree concludes. The components that stop branching out are known as leaves.

Evolutionary Programming

An approach that incorporates several types of data analysis is called an evolutionary algorithm. Moreover, it is a domain-independent approach that manages attribute interaction well and can scan a large amount of space.

Fuzzy Logic

Instead of the usual “Boolean logic” (true/false or 0/1) in computers, this data analysis method uses “Degree of truth” (truth/false or degree of truth). As previously explained, the answers to decision nodes in decision trees are either yes or no. However, what if there are circumstances in which we cannot determine an absolute 0 or 1? In these situations, fuzzy logic is crucial. It is a varied valued logic, meaning that any actual number between 0 and 1 can represent the true value, which ranges from entirely true to absolutely false. You can use Fuzzy logic when there is more noise in the values.


The challenging issue that every company or firm must answer is which data analysis approach is ideal for them. Different strategies can be explored to evaluate which best suits the data set before selecting it for usage rather than defining one as the best. Choosing the correct data analysis method for the available data can be one of the most powerful tools that can help make decisions for the business’s future success.

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