The datafile consists of weekly closing prices $($USD$)$ from January $2020$ to May $2024$ on the $20$ largest technology companies appearing in the Nasdaq $100$ index.

i$.$ Explore the data, individual securities and their characteristics.

ii$.$ Use hierarchical cluster analysis to determine if meaningful groups can be formed based on weekly stock returns.

iii. What conclusions $($if any$)$ do you draw from your analyses?