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The Data Analysis Guide For Decision Making


Data is everywhere. It’s being generated, stored, and analyzed in every industry. In fact, it’s estimated that by 2020 there will be 44 zettabytes of data on the internet. Data analysis is one of the most important skills for anyone who wants to succeed in today’s digital world—whether you work for a startup or large corporation, are part of an academic research team or government agency, or have your own business. But what is data analysis? And how do you go about analyzing data? Read on for a comprehensive guide on everything from collecting data to presenting your findings visually:

Data Collection

Data collection is the first step in the data analysis process. It is the process of gathering information from various sources, manually or automatically. Data collection can be done by a human or machine, but it’s usually better to have humans do it because they can think critically about what they are collecting and how they are doing so. If you’re using a computer program for your data collection process, make sure that you have someone double check their work before moving forward with any further analysis!

Data Processing And Analysis

Data processing and analysis are the two main steps of any data science project. In this section, we will walk through how to do each one in Python.

  • Data cleaning is the process of fixing errors in your dataset so that it’s ready for analysis. This includes things like removing duplicates or missing values, correcting misspellings or typos, identifying inconsistencies between columns (e.g., “male” vs “man”), etc…
  • Data integration involves combining multiple datasets into a single file for analysis purposes. For example: if you want information about all customers who live in California AND purchased something from Amazon within the last year AND have an account with Bank Of America – then those three datasets need to be combined into one big dataset before doing any further analysis! If this sounds complicated now – don’t worry! We’ll cover exactly how this works when we get into our next section…


Modeling is the process of creating a mathematical representation of a system. It can be used to predict future outcomes, and it’s one of the most important tools in data science.

A model can be thought of as an equation that describes how something works. For example, if you wanted to know what would happen if you threw a ball into the air and then caught it again, you could create a model based on Newton’s Law: F=ma (force equals mass times acceleration). With this equation in hand, your next step would be finding out what happens when we apply forces – like gravity – on both sides of our equation so we can see how those affect acceleration (or deceleration).

Reporting And Visualization

Reporting And Visualization

Reporting and visualization are two of the most important steps in data analysis. Reporting is the process of communicating your findings to others, while visualization helps you understand the data better. You can use visualization techniques to communicate your findings in a way that will be easy for others to understand, or even make decisions based on what you discover through visualizing the data.

There are many steps to data analysis.

Data analysis is a complicated, multi-step process that can be broken down into five major steps: data collection, data processing and analysis, modeling, reporting and visualization. Each step is important for the success of your project.

Data collection refers to how you get your data in the first place. Data collection methods include surveys (online or face-to-face), interviews or focus groups with experts in your field of study (typically called “subject matter experts”), direct observation of events happening around us every day such as traffic patterns at intersections or changes in consumer behavior after watching an ad campaign on TV. Once you’ve collected this information from various sources it needs to be cleaned up so that it’s usable by people who don’t have time to sift through all those messy numbers themselves! This process involves cleaning up misspelled words like “the” versus “they” so they read correctly when analyzing them later on down the road if needed; removing duplicate entries which could skew results because there may be multiple entries for what appears only once per person; checking whether certain values fall outside their expected range (elders tend not

be able -or willing–to respond accurately when asked questions about their health status); converting values from one type into another type (for example converting Fahrenheit temperatures into Celsius).


Data analysis is a process that requires a lot of time and effort. It can be very difficult to make sense of all the information that you have collected, but it’s important that you do so if you want to make good decisions based on this data. If you are looking for help with your data analysis project, check out some of our other articles on how to do it!