Lead time: Applying Little’s Law to track it
“The average number of work items in a stable system is equal to their average completion rate, multiplied by their average time in the system.” ~ John Little, 1961
My wife and I have a combination. The right side of the bar is mine, the left side is hers. I only drink whiskey. My side of the bar fits 12 bottles of whiskey.
The number of whiskey bottles at my bar is constant: 12 bottles. Per year, I finish an average of 6 whiskey bottles.So, what is the average time for whiskey bottle in my bar?