Anassembly-line machine turns out washers with the following thicknesses(in millimeters). Find the mean and standard deviation of the thicknesses.

1.75

2.08

2.02

1.56

1.61

1.38

2.05

1.69

1.98

1.86

1.52

2.02

1.36

1.71

1.47

1.48