Statistical analysis of 15 global airline stocks during COVID-19's two waves (2020) — using Spearman correlation, Wilcoxon Signed-Rank Test, and trend analysis in Excel to examine how adjusted close prices and trading volumes shifted between the panic and recovery phases.
data-mining excel statistical-analysis group-project financial-data hypothesis-testing yahoo-finance time-series-analysis stock-market-analysis wilcoxon-test covid-19 spearman-correlation airline-industry trend-aalysis aviation-economics
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Updated
Apr 4, 2026