Final answer:
Decreased variability boosts predictability in systems or processes by making outcomes more consistent and easier to forecast, aiding better planning in a business context.
Step-by-step explanation:
A decrease in variability generally leads to an increase in predictability. If the variability of a process or system decreases, it signifies that there are fewer fluctuations and hence, outcomes become more consistent and easier to foresee. In a business context, this can lead to improved planning and decision-making as the behavior of markets, products, or services becomes more consistent over time.