What makes the difference between “long” and “wide” format data?
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What is nosql? Name some examples of nosql databases.
How do you do for loops in python and r?
Which is the best suitable language among python and r for text analytics?
Please explain the role of data cleaning in data analysis.
Describe univariate, bivariate and multivariate analysis?
What is churn?
How do you take millions of users with 100's of transactions each, amongst 10000's of products and group the users together in a meaningful segments?
What are the roles and responsibilities of a data scientist?
How and by what methods data visualizations can be effectively used?
What is association analysis? Where is it used?
You have been given the data on Facebook user's friending or defriending each other. How will you determine whether a given pair of Facebook users are friends or not?
What is the differences between univariate, bivariate and multivariate analysis?
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