Effect of Plant Spacing Variability on Corn Grain Yield

NOTE: The standard deviation is a common statistical calculation used to describe variability within a set of values, in this case used to represent the variability among consecutive plant-to-plant spacings within rows of a corn field. Most computer spreadsheet programs can calculate the standard deviation of a group of values (i.e., a given range of data cells) with the use of a built-in mathematical function. For example, in MicrosoftTM ExcelTM the formula would be: =STDEV(cell range).