In this field trial, the yields of a standard commercial wheat variety and a new ‘improved’ variety were compared to assess differences in average performance. Seven small plots were planted with each variety, resulting in yield measurements from a total of 14 plots. Yields were determined for each plot and standardized to tonnes per hectare (t/ha). The primary objective of the study was to evaluate whether the new variety offers a significant advantage in yield over the standard commercial type.
Format
A data frame with 3 variables: DPlot, Variety, Yield.
- DPlot
Factor. Unique identifier for each plot in the field trial.
- Variety
Factor. Wheat variety grown in each plot ("Commercial" or "Improved").
- Yield
Numeric. Grain yield from the plot, measured in tonnes per hectare (t/ha).
Source
Welham, S. J., Gezan, S. A., Clark, S. J., and Mead, A. (2015) Statistical Methods in Biology: Design and analysis of experiments and regression
Examples
lm(Yield ~ Variety, data = wheat)
#>
#> Call:
#> lm(formula = Yield ~ Variety, data = wheat)
#>
#> Coefficients:
#> (Intercept) VarietyImproved
#> 7.571 2.714
#>