Class 12 Plotting Data using Matplotlib Mock Test (CBSE)

Topics in Plotting Data using Matplotlib

• Introduction to data visualisation
• Plotting using Matplotlib
• Customisation of plots: labels, title, legend and markers
• The pandas plot function
• Line plot
• Bar chart
• Histogram

Plotting Data using Matplotlib practice questions with answers

1. Q1Short answer·2 marks
   Write Python code using the `matplotlib.pyplot` module to draw a line plot for two lists $x = [1, 2, 3, 4]$ and $y = [10, 15, 20, 25]$. Set the title of the plot to $\text{"Growth"}$ and make the line dashed with red color.
   Show answer and step marks

   1. Import the module: `import matplotlib.pyplot as plt`.+0.5
   2. Define the data: `x = [1, 2, 3, 4]` and `y = [10, 15, 20, 25]`.+0.5
   3. Plot a red dashed line: `plt.plot(x, y, color='red', linestyle='dashed')` (equivalent forms such as `'r--'` or `linestyle='--'` accepted).+0.5
   4. Set the title and display: `plt.title('Growth')` followed by `plt.show()`.+0.5

   Answer: `import matplotlib.pyplot as plt`; `x = [1, 2, 3, 4]`; `y = [10, 15, 20, 25]`; `plt.plot(x, y, color='red', linestyle='dashed')`; `plt.title('Growth')`; `plt.show()`

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