input: 
  def create_data_visualization_dashboard() -> None:
      """ Create a data visualization dashboard using Matplotlib.
      >>> create_data_visualization_dashboard()
      # A visualization dashboard with a line plot titled "My Data Visualization Dashboard"
      # The x-axis is labeled 'X-axis' and the y-axis is labeled 'Y-axis'
      # The line plot has green, dashed lines with circle markers.
      """
      import matplotlib.pyplot as plt
  
      # Generate the data for the dashboard
      x = [1, 2, 3, 4, 5]
      y = [10, 25, 30, 50, 80]
  
      # Create the figure and set the size
      fig = plt.figure(figsize=(10, 6))
  
      # Configure the plot
      plt.plot(x, y, color='green', marker='o', linestyle='dashed', linewidth=2, markersize=12)
      plt.title("My Data Visualization Dashboard")
      plt.xlabel('X-axis')
      plt.ylabel('Y-axis')
  
      # Show the plot
      plt.show()
  
output:     # Save the figure as an image file
      fig.savefig('dashboard.png')
  
      # Close the figure to free up memory
      plt.close(fig)