Data Visualization with Python Week 2: Matplotlib Plot Function
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Questions and Answers

What is a major design limitation of matplotlib?

  • It is not scalable to large datasets
  • It strives to emulate MATLAB (correct)
  • It is difficult to use
  • It does not support 3D visualizations

    • What is the purpose of the 'hidden' variable in the plt.plot() function?

  • To make the code more concise
  • To enable incremental modification of the figure
  • To pander to MATLAB users (correct)
  • To improve the performance of the visualization

    • What is the purpose of the plt.axhline(0) and plt.axvline(0) functions?

  • To draw horizontal and vertical lines at the origin (correct)
  • To set the x and y axis limits
  • To save the figure to a file
  • To label the x and y axes

    • What is the Lie Factor, according to Edward Tufte?

    <p>The ratio of the size of the effect in the visualization to the size of the effect in the data (B)</p> Signup and view all the answers

    What is the purpose of the plt.savefig() function?

    <p>To save the figure to a file (A)</p> Signup and view all the answers

    What is the purpose of the plt.show() function?

    <p>To display the figure on the screen (A)</p> Signup and view all the answers

    What is the purpose of the color_palette() function in Seaborn?

    <p>To plot the data using a specific color palette (C)</p> Signup and view all the answers

    What are the different types of color palettes in Seaborn?

    <p>Qualitative, Sequential, and Diverging (B)</p> Signup and view all the answers

    Which Seaborn function is used to plot the color palette as a horizontal array?

    <p>palplot() (B)</p> Signup and view all the answers

    What is the purpose of a qualitative color palette in Seaborn?

    <p>To plot categorical data (A)</p> Signup and view all the answers

    How can you specify the number of colors to be used in a Seaborn color palette?

    <p>By passing the <code>n_colors</code> parameter to the <code>color_palette()</code> function (B)</p> Signup and view all the answers

    What is the purpose of a sequential color palette in Seaborn?

    <p>To express the distribution of data from lower to higher values (D)</p> Signup and view all the answers

    What type of plot is the most convenient way to visualize the distribution of two variables in a two-dimensional plot with x and y axes?

    <p>Scatter Plot (B)</p> Signup and view all the answers

    Which type of plot is used in bivariate data analysis when the data is sparse in density and scattered, making it difficult to analyze through scatterplots?

    <p>Hexbin Plot (C)</p> Signup and view all the answers

    In seaborn, what parameter and value combination is used to plot a hexbin plot in a joint plot?

    <p>'kind'='hex' (D)</p> Signup and view all the answers

    What type of plot is a non-parametric way to estimate the distribution of a variable?

    <p>Kernel Density Estimation (D)</p> Signup and view all the answers

    Which plot projects the bivariate relationship between two variables and also displays the univariate distribution of each variable on separate axes in a multi-panel figure?

    <p>Scatter Plot (B)</p> Signup and view all the answers

    When visualizing the relationship between petal_length and petal_width in the Iris dataset, which type of plot indicates a positive correlation between the variables?

    <p>Scatter Plot (A)</p> Signup and view all the answers

    What does the hue parameter in sns.violinplot() represent?

    <p>The categorical variable used to group the data (D)</p> Signup and view all the answers

    What type of plot is used when one of the variables under study is categorical?

    <p>Stripplot (B)</p> Signup and view all the answers

    What visual difference can be observed when using split=True in sns.violinplot()?

    <p>The violin plot is split into two halves, representing the two categories of the <code>hue</code> variable (D)</p> Signup and view all the answers

    What is the purpose of the sb.set_style("ticks") function call?

    <p>To set the style of the plot to use ticks on the axes (A)</p> Signup and view all the answers

    What does the y parameter in sns.violinplot() represent?

    <p>The numerical variable to be plotted on the y-axis (A)</p> Signup and view all the answers

    What is the purpose of the plt.show() function call?

    <p>To display the plot on the screen (C)</p> Signup and view all the answers

    What is the purpose of the sns.load_dataset() function?

    <p>To load one of the built-in datasets provided by Seaborn (D)</p> Signup and view all the answers

    What is the purpose of the sb.pairplot() function call?

    <p>To create a scatter plot matrix (C)</p> Signup and view all the answers

    What statistical concept is represented by a violin plot?

    <p>Distribution shape (A)</p> Signup and view all the answers

    What is the purpose of the plt.show() function in the provided code?

    <p>To display the plot in a new window (D)</p> Signup and view all the answers

    What is the purpose of the diag_kind="kde" parameter in the sb.pairplot() function call?

    <p>To use a kernel density plot for the diagonal plots (D)</p> Signup and view all the answers

    What is the purpose of the kind="scatter" parameter in the sb.pairplot() function call?

    <p>To use a scatter plot for the off-diagonal plots (C)</p> Signup and view all the answers

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