Quiz on Data Science

Question 1

You need to check the relationship between the two variables. Which graph would you use?

Accepted Answer

Pair plot

Answer

Histogram

Answer

Box plot

Answer

Any of the mentioned graphs can be used

Question 2

Which of the following statement is false?

Accepted Answer

Decision Trees can only handle numerical variables.

Answer

Decision Trees are intuitive to understand.

Answer

Decision Trees can be used for classification and regression.

Answer

Random Forests algorithm uses Decision Trees.

Question 3

Which of the following statement is false?

Accepted Answer

K-Nearest Neighbors can be used for clustering.

Answer

K-Nearest Neighbors uses proximity for prediction.

Answer

K-Nearest Neighbors takes a majority vote on K data points.

Answer

K-Nearest Neighbors is especially used in data mining and pattern recognition

Question 4

Which of the following is not a focus area under data governance?

Accepted Answer

Data traceability

Answer

Data integrity

Answer

Data availability

Answer

Data consistency

Question 5

Which of the following is a data cleaning step?

Accepted Answer

Removing duplicates

Answer

Adding duplicates

Answer

Ignoring outliers

Answer

Adding features

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