You work for a retail company and have been given historical monthly sales data. Your goal is to forecast sales for the next 3 months using statistical methods only (like mean, median, moving average, etc.).

Monthly data of sales with other variables :

Month datetime64 Sales int64
Marketing_Spend int64
Holiday_Month object
Customer_Complaints int64
Discount_Offered int64

Objective is to forecast for Jan, Feb, Mar 2024 with monthly data for 2022, 2023