hi I need help with this question can someone please help me thank you.

I need to create a algorithm using pseudocode in python 3 and I don't know how to start on it there is no sample of the output can someone please explain it to me and to provide me with the code and explanations thank you.

Prompting the user to input a set of grades and print the highest value, minimum value, and average.

Explain why you chose the type of control structures and/or loops used in your algorithm (if-else, for, while, etc.).

Explain how you might revise the algorithm you designed in Module Two based on any new information you learned here.