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Plotting Data using Matplotlib — Revision Notes

CBSE · Class 12 · Informatics Practices

Plotting Data using Matplotlib revision notes for CBSE Class 12 Informatics Practices: 4 topics in quick points.

63 questions78 flashcards5 concepts

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Key Topics to Revise

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1. Matplotlib Basics and Figure Components

  • Matplotlib can be installed using pip install matplotlib from the command prompt.
  • matplotlib.pyplot is imported using import matplotlib.pyplot as plt.
  • pyplot contains functions used to work on a plot.
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2. Plot Customisation and Line Plots

  • plt.xlabel() sets the x-axis label.
  • plt.ylabel() sets the y-axis label.
  • plt.title() sets the chart title.
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3. Pandas Plot Function

  • Pandas Series and DataFrame objects have their own .plot() methods starting from Pandas version 0.17.0.
  • The Pandas plot() method is a simple wrapper around the plot() function of pyplot.
  • The general syntax for kind-based plotting is df.plot(kind = ' ').
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4. Histogram and Frequency Polygon

  • Histograms are column-charts, where each column represents a range of values, and the height of a column corresponds to how many values are in that range.
  • Bins are the number of intervals into which data is divided for a histogram.
  • df.plot(kind='hist') automatically chooses bin size unless bins are set manually.

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Full Notes

Key Concepts

Matplotlib is a Python library usedpyplot is the module of MatplotlibA figure is the overall windowThe plot() function creates the plotA figure can be saved using

Frequently Asked Questions

What are the important topics in Plotting Data using Matplotlib for CBSE Class 12 Informatics Practices?
Key topics in Plotting Data using Matplotlib include Matplotlib Basics and Figure Components, Plot Customisation and Line Plots, Pandas Plot Function, Histogram and Frequency Polygon. Study these first, then practise questions on each for the CBSE Class 12 board exam.
How should I revise Plotting Data using Matplotlib for the CBSE Class 12 board exam?
Learn the core ideas first, then work through the 63 practice questions on Plotting Data using Matplotlib. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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