What do you understand by the selection bias? What are its various types?

187

while working on a data set, how can you select important variables? Explain

223

What is the job of analytics?

200

What prior knowledge is required to become data scientist?

197

In a given day, how many birthday posts occur on Facebook?

240

How can the outlier values be treated?

186

A box has 12 red cards and 12 black cards. Another box has 24 red cards and 24 black cards. You want to draw two cards at random from one of the two boxes, which box has a higher probability of getting cards of same colour and why?

613

Explain systematic sampling?

172

What devices or tools help you most as a data scientist?

166

Check whether a given integer is a palindrome or not without converting it to a string.

235

How do you use lambda in python?

199

How can you deal with different types of seasonality in time series modelling?

206

What is meant by binomial distribution?

260

What is the differences between univariate, bivariate and multivariate analysis?

221

Can you explain the difference between a Test Set and a Validation Set?

213