What is the maximum height a piece of chalk might be dropped without breaking for a given surface? Which parameters does the height depend on? Are there any dropping or throwing techniques which minimize the breakage probability?
8.75
7.00
7.50
6.50
6.75
9.00
7.25
7.80
8.25
7.40
6.00
5.60
8.50
9.25
6.20
MEAN
7.21
7.31
7.54
