Virtusa Consulting Services Data Scientist Interview Questions and Answers

P value is a measure of the strength of evidence against the null hypothesis in a statistical test, while probability is the likelihood of an event occurring.

• P value is used in hypothesis testing to determine the significance of results

• Probability is a measure of the likelihood of an event occurring

• P value ranges from 0 to 1, with lower values indicating stronger evidence against the null hypothesis

• Probability also ran...read more

Using pandas to manipulate dataframes through screen sharing coding.

• Use pandas library in Python for data manipulation

• Share screen to demonstrate coding techniques

• Use functions like merge, groupby, and apply for data manipulation

Use Twitter API to extract tweets, perform text analysis to identify top discussed topics.

• Access Twitter API to retrieve tweets

• Perform text analysis using NLP techniques like TF-IDF or LDA

• Identify keywords or hashtags with highest frequency to determine top discussed topics