What is the observation in this study?

1. Data treatment An aspiring speculator on non-fungible tokens OpenSea $76 m (NFT) needs to open an NFT marketplace CryptoPunks $3 m account. They collect the current volumes of trade on a few popular marketplaces Axie $2 m NBA top shot $1 m Atomic 0.5 m (a) For this study, determine: Are these marketplaces the population, the frame, or the sample of the study? Explain why. Would the smallest value of the five values be a statistic or a parameter? statistic Is it a descriptive, predictive, or prescriptive study? Descriptive (b) Determine scales of data measurement (explain where unsure): LooksRare marketplace has lost 17% of trade volume recently Most NFTs are built on the Etherium blockchain, but there are exceptions: AtomicMarket relies on Worldwide Asset exchange, WAX. LooksRare is the biggest marketplace, OpenSea is the second, and Magic Eden holds the third place by trade volume. There currently are 1,155 traders on LooksRare and 41,887 on OpenSea (c) A website, dappradar.com, reports the marketplace name, average NFT price, number of traders, and daily trade volume for each marketplace. List the variables in this study