Career Guidance

Data Science Interview Questions – Part 1

Data science is a field which has no ends. It doesn’t matter how much you will read it will always be less. One interviewer told me that you use only 5% of knowledge what you learn in data science. Its actually true. Although the type of questions changes according to the job profiles. I will …

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A Data Science Project- Part 3: Hypothesis testing and ANOVA

This post is in continuation of A Data Science project series. In this post, We will use ANOVA test whenever we need to check if two or more groups are different from each other or not. i.e. let’s say there are four races in a school – White, Hispanic, Black and Indian. Now school management …

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A Data Science Project- Part 2: Making Sense of Data

I hope you have gone through part1 and part2, Today I will tell you not only how to explore data through visualization but also the most important part how to interpret them. Don’t miss reading summary in the end of every post. we will create bar chart, histograms, scatter-plot, box-plots etc. We will also check …

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A Data Science Project- Part 1(b)

In the previous article (https://d4datascience.com/2016/11/10/a-data-science-project-part-1/), we have done basic data analysis like calculating means, frequency tables, summary etc. Now we will derive new variables. Why? Derived variables will help to understand more about them. For example, We have derived variable¬†ip(derived from incomeperperson variable) which will help us to understand how many people fall in lower …

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A Data Science Project- Part 1(a)

In the earlier post, we have discussed our hypothesis and different variables impacting life expectancy. In this post, we will start digging into data. I suggest you go through codebook(check the earlier post). It is important to understand variables first before doing any analysis. I have chosen SAS as data analysis language, but you are …

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A Data Science Project-Introduction: How can we have better life expectancy!

Hi, future data science buddies! I have been asked many times how can I become data scientist or what should I do to become a data scientist.¬† Here I have written about some technical skills that are required to be a data scientist. How to make career into Data Science But above article was lacking …

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