Python In Practice - 15 Projects to Master Python - Data Visualization - Advanced Level: Data Science

What function is used to read a CSV file in pandas?

• read_csv()

• read_excel()

• read_json()

• read_table()

What is the purpose of data cleansing?

• To add more data

• To create new data

• To remove errors and inconsistencies

• To visualize data

Which method is used to visualize data as a bar graph in pandas?

• plot_bar()

• bar()

• bar_plot()

• plot()

How can you change the orientation of a bar graph to horizontal in pandas?

• Use the 'horizontal' parameter

• Use 'plot_horizontal()'

• Set 'orientation' to 'horizontal'

• Add 'barh' to the plot function

What is the purpose of using stacked bar graphs?

• To compare parts of a whole

• To display data in 3D

• To highlight outliers

• To show data trends over time

What is the significance of data visualization?

• To hide data errors

• To simplify data analysis

• To increase data size

• To make data look pretty

Which plot type is useful for understanding the distribution of data?

• Histogram

• Scatter plot

• Pie chart

• Line plot

What is the main advantage of using area plots?

• To show individual data points

• To highlight data trends

• To compare quantities over time

• To display categorical data

In pandas, which method is used to calculate the mean of a column?

• sum()

• mean()

• median()

• average()

Which library does pandas use for plotting?

• Matplotlib

• Seaborn

• Plotly

• Bokeh