How do I plot a some dots with a trendline in pyplot?

To plot a tr end line in Py plot , you can use the ` poly fit ` function to fit a polynomial to your data and then use the ` poly 1 d ` function to create a function that can be used to generate the tr end line . Here is an example : \n ``` \n import numpy as np \n import matplotlib . py plot as plt \n \n # Gener ate some data \n x = np . ar ange ( 0 , 1 0 , 0 . 1 ) \n y = np . sin ( x ) \n \n # F it a second - deg ree polynomial to the data \n p = np . poly fit ( x , y , 2 ) \n \n # Create a function that uses the coefficients of the polynomial to generate the tr end line \n def tr end line ( x ): \n return p [ 0 ] * x ** 2 + p [ 1 ] * x + p [ 2 ] \n \n # Plot the data and the tr end line \n pl t . plot ( x , y , ' o ', label =' Data ') \n pl t . plot ( x , tr end line ( x ), '- ', label =' Tr end line ') \n pl t . legend () \n pl t . show () \n ``` \n This will generate a plot with the data points and the tr end line . You can custom ize the appearance of the plot by using the various options provided by Py plot . For example , you can change the color and style of the tr end line by passing different values to the ` plot ` function . </s>