Machine Learning quiz medium level

Test description

The test checks knowledge of machine learning for data scientists at a medium level, whose skills are up-to-date with the most common algorithms and techniques.
Questions include outputs used for interpretation. The test focuses on the main subjects related to machine learning, testing subjects such as supervised learning, unsupervised learning, feature engineering, hypothesis testing and decision-making in terms of accuracy.

Topics: clustering, dimensionality reduction, regression, classification, accuracy, text analysis, time series analysis.

Sample questions

1

Assume there is a document 16 in a corpus. The plot below shows the highest tf-idf values for this specific document. What is the interpretation of the plot?

‘religious’ is the most common word in the document.

‘religious’ is the most common word in the corpus.

‘religious’ is the most important word in the document.

‘religious’ is the most important word in the corpus.