By 1920, the engineers had already realized the importance of reducing variation in a manufacturing process.

This is used to reduce variation due to polishing, etc.

"If we do things the right way, and reduce variation, we will end up with savings."

"We continue to work, worldwide, with each of our carriers," he wrote, "to reduce the mean and variation in their delivery times."

A bottleneck can reduce or eliminate genetic variation from a population.

These two social biases act together in reducing within-group variation.

On the other hand, this can lead to inbreeding and reduce genetic variation within populations.

Other events, like natural selection and drift, reduce variation.

Different steps can be used to reduce somaclonal variation.

The federal role, she argued, "is to reduce variation."