Explain data preparation?
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Explain the differences between univariate and bivariate analysis?
What do you mean by cluster sampling and systematic sampling?
What is the advantage of performing dimensionality reduction before fitting an svm?
You created a predictive model of a quantitative outcome variable using multiple regressions. What are the steps you would follow to validate the model?
What is a z test?
How will you compare the results of various machine learning algorithms?
What is underfitting?
How is random forests different from decision trees?
Who can be scientific data there are three general steps to becoming a data scientist?
How do you treat multicollinearity and heteroscedasticity in regression? Name some packages in r and python for building regression models.
What is meant by supervised and unsupervised learning in data?
How to choose the right chart in case of creating a viz?