Create a dummy index say nifty 05 instead of nifty 50

Select 5 companies of your choice (preferably large and liquid)

Collect daily prices for 30 days. You can choose your start and end times. The minimum should be 30 days.

Also collect data on market cap free float market cap and variable of your choice at the beginning of the time period

The free float market cap is available on NSE website

Adjust the base value to 100 and Compute the index (based on free float market cap)and returns on the nifty05 index

Repeat this using weights based on the market cap and some other weights you can imagine.

Once again, Compute the index and returns on the nifty05 index

Compare and comment on them.

Assume there are no stock splits and dividend announcements.