Data Science Trivia 4

Question 1

What does 'ETL' stand for in data engineering?

Accepted Answer

Extract, Transform, Load

Answer

Evaluate, Test, Launch

Answer

Encode, Transfer, Link

Answer

Export, Track, Log

Question 2

Which value, ranging from -1 to 1, measures linear correlation between two variables?

Accepted Answer

Pearson correlation coefficient

Answer

P-value

Answer

R-squared

Answer

Z-score

Question 3

In hypothesis testing, what does a small p-value typically suggest?

Accepted Answer

Strong evidence against the null hypothesis

Answer

The data is missing

Answer

The sample is too large

Answer

No relationship exists

Question 4

Which visualization library is most associated with statistical plotting in Python and is built on Matplotlib?

Accepted Answer

Seaborn

Answer

Bokeh

Answer

Plotly

Answer

Pillow

Question 5

What is a row in a relational database table also called?

Accepted Answer

Record

Answer

Schema

Answer

Index

Answer

Query

Question 6

Which sampling method gives every member of a population an equal chance of selection?

Accepted Answer

Simple random sampling

Answer

Convenience sampling

Answer

Quota sampling

Answer

Snowball sampling

Question 7

What does a histogram primarily display?

Accepted Answer

The distribution of a single numeric variable

Answer

Correlation between two variables

Answer

Geographic data

Answer

Category proportions of a whole