input: Write a function to create a data visualization dashboard in Python using Matplotlib. The function should plot a line graph based on the given data points and set the plot's title and axis labels. If the provided data points are invalid (e.g., empty list), the function should return a message indicating invalid data.
  assert create_dashboard([1, 2, 3, 4, 5], [10, 25, 30, 50, 80]) == None
  assert create_dashboard([], [10, 25, 30, 50, 80]) == "Invalid data"
  assert create_dashboard([1, 2, 3, 4, 5], []) == "Invalid data"
output: def create_dashboard(x_values, y_values):
      if not x_values or not y_values:
          return "Invalid data"
      plt.plot(x_values, y_values)
      plt.title('Data Visualization Dashboard')
      plt.xlabel('X-axis')
      plt.ylabel('Y-axis')
      plt.show()