Please anyone help in creating a bar chart with callback using dash app

I wanted to create such that the year is the selection bar according to which the bar chart of no. of students in each course is created and can be toggled through the year in selection bar.

Hi @sscr7, welcome to the forums. I think a good starting point would be watching one of @adamschroeder’s videos, for example this one

Plotly Dash Tutorial - Interactive Python Web App Development - YouTube