Quantifying Correlation
Analysis
The relationships between drought indices and crop yields were analyzed
using Spearman’s rho correlation coefficient. This non-parametric method
was chosen to account for potential non-linear relationships.
Statistical significance was determined at p<0.05p <
0.05p<0.05. Limitations of satellite-based indices, such as
uncertainties in NDVI and SPEI compared to ground-based measurements,
were considered in interpreting results.