The average was just a ghost. The plant was either choking or starving, never steady.
Then she closed her laptop, patted Montgomery’s textbook, and smiled. Statistics didn't move rock. But they told you which lever to pull, and when to leave it alone. That was the real art of mineral engineering. Statistical Methods For Mineral Engineers
The mine manager’s next text was less congratulatory and more confused. “Why did our instantaneous rate drop but our total tonnage increase?” The average was just a ghost
“Here to fix what ain’t broke, Doc?” he grunted. Statistics didn't move rock
Twelve percent. It felt like a lie.
She pulled up the last 72 hours of data from the conveyor belt scale. The plant reported the daily average: 1,200 tonnes per hour. But when she plotted the individual one-minute readings, the story changed. The chart looked like a seismograph during an earthquake. Peaks at 1,600 tph, troughs at 800 tph.