Plots in Python with Numpy and Matplotlib

The video tutorial guides students through accessing course materials, setting up Jupyter notebooks, and using Python libraries like NumPy and Matplotlib for data visualization. It covers creating and customizing plots, including changing colors, adding labels, and saving figures. The session concludes with a review and a preview of upcoming topics like subplots and charts.

What is the first step to access the course materials for homework 9?

• Email the instructor for the files.

• Download the Python software.

• Search for the files on Google.

• Visit the course website and navigate to homework 9.

Which Python package is used for creating arrays and data processing?

• SciPy

• Pandas

• NumPy

• Matplotlib

What is the purpose of using 'matplotlib inline' in a Jupyter notebook?

• To save plots as image files.

• To display plots directly within the notebook.

• To enable inline editing of code.

• To import additional Python libraries.

How do you create a linearly spaced array from 0 to 5 with 100 points using NumPy?

• np.arange(0, 5, 100)

• np.array(0, 5, 100)

• np.linspace(0, 5, 100)

• np.range(0, 5, 100)

Which function is used to plot data in matplotlib?

• plt.show()

• plt.plot()

• plt.draw()

• plt.display()

What is the correct way to add a legend to a plot in matplotlib?

• plt.legend()

• plt.add_legend()

• plt.insert_legend()

• plt.show_legend()

How can you save a plot as a PNG file in matplotlib?

• plt.export('filename.png')

• plt.savefig('filename.png')

• plt.store('filename.png')

• plt.save('filename.png')

What is the purpose of using dollar signs in plot labels?

• To format text as bold.

• To underline the text.

• To apply LaTeX formatting for mathematical expressions.

• To italicize the text.

What is one of the topics mentioned for the next video?

• Creating 3D plots

• Implementing web scraping

• Using machine learning algorithms

• Working with subplots

Which type of charts will be covered in the upcoming video?

• Line charts and scatter plots

• Bar charts and pie charts

• Heatmaps and contour plots

• Histogram and box plots