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Taylor’s power law (TPL) describes the empirical relationship σ2=aμb where σ2 are sample variances and μ are sample means in subsets of data in a data set. Equivalently, TPL states that the logarithm of the sample variance is a linear function of the logarithm of the sample mean across different subsets of data. Here we show that crop yields follow this relationship in several published data sets...
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