Professor Jones is very particular when it comes to his morning coffee. During a break in a staff meeting, he decided to head to the staff room to fill up his coffee mug. After one sip of cold, watered-down coffee, he emptied his mug and decided to make his own. While waiting for the new pot to brew, he compiled the analysis below to determine why the coffee was terrible. What is this graphical tool called? Why did the coffee taste watered down? What was the root cause? What was the root cause for the coffee not being hot enough?.