A homeowner has 5 cherry tomato plants in her garden. Over the course of the season the yields (in pints of tomatoes per plant) are:

Plant 1 2 3 4 5
Yield 4 3.5 4.5 4.2 3.8

What is the average yield per plant, and what is the standard deviation (to two decimal places)?
Average:_________

Standard Deviation:________