Detalle de Cambio

Cambio #5 Number of pots per treatment type (Soil-2019)
Descripción Originalmente, there were (3x2x2x2) 24 experimental units (3 Cu levels, 2 JBR, 2 plant types and 2 soil types). For each experimental unit a pot is prepared and repeated 3 times..
En esta replicación, there are (3x2) 6 experimental units (3 soils and 2 JBR levels). For each experimental unit 4 pots are prepared forming a block. This is repeated 3 times..
Con el propósito de analyse the influence of two naturally contaminated soils and a third uncontaminated one..
Dimensión Protocolo, específicamente, diseño experimental.
Efectos sobre la validez
  • Este cambio incrementa sustancialmente (+3) la validez de conclusión porque increasing the number of subjects (n) improves the power of statistical tests, reducing the probability of obtaining a false negative (type II error)
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