The Coefficient of Variation or CV is a statistical term that represents the level of dispersion of

samples around the mean in a unitless way (since both average and standard deviation have the

same units – their division is unitless, like a percentage). The higher the coefficient, the greater the

dispersion is.

In stand count scouting, CV usually refers to the seed spacing CV. It is calculated by collecting seed

spacing samples across the field and calculating their statistical CV.

Currently in Taranis – our CV calculation is not done in the conventional manor.

We base our CV calculation on the average seed spaces measured in different locations in the field.

The conventional way:

Conventional CV = StDev(samples of seed space) / Average(samples of seed space)

Our current calculation:

Taranis CV = StDev(samples of average seed space) / Average(samples of average seed space)

Where the samples of average seed space are generated from each image collected throughout the

field.

Note: since the “Taranis CV” is based on the average seed spaces in the field it tends to be smaller

than the “Conventional CV”.

Since the Taranis CV is based on averaged samples measured across the field – it better captures the

disparity that originates from the variation through the field. We do however have the ability to

calculate the conventional CV per image and per field, and plan on adding that to our stand count

solution.

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