DSE DSE - Data Science Data Visualization and Communication

Question 1

Which Python library is most commonly used for creating static statistical visualizations in data science?

Accepted Answer

Matplotlib

Answer

Plotly

Answer

Bokeh

Answer

Altair

Question 2

What type of chart is best suited for showing the frequency distribution of a single continuous variable?

Accepted Answer

Histogram

Answer

Bar chart

Answer

Scatter plot

Answer

Line chart

Question 3

Which visualization technique best shows the correlation between two continuous variables?

Accepted Answer

Scatter plot

Answer

Pie chart

Answer

Stacked bar chart

Answer

Box plot

Question 4

In a box plot, what do the 'whiskers' typically represent?

Accepted Answer

1.5× the interquartile range from Q1 and Q3

Answer

Standard deviation

Answer

Mean ± 1 standard error

Answer

Minimum and maximum values only

Question 5

Which chart type is most appropriate for comparing proportions that sum to a whole?

Accepted Answer

Pie chart

Answer

Scatter plot

Answer

Histogram

Answer

Heatmap

Question 6

What is the primary analytical purpose of a heatmap in data science?

Accepted Answer

Visualizing magnitude across a two-dimensional matrix using color intensity

Answer

Showing time-series trends

Answer

Displaying hierarchical relationships

Answer

Comparing distributions across groups