For the sample data set from HW M$0$ Problem $1$: $92,97,88,91,94,94,85,93,81,85$ perform the

following calculations or operations with pencil and paper:

a$.$ Find the mean.

b$.$ Find the standard deviation using the defining form of s

c$.$ Find the standard deviation using the calculating form of s

d$.$ Estimate the standard deviation from the range using the d$2$ method

e$.$ Determine the quartiles.

f$.$ Calculate the IQR.

g$.$ Sketch a boxplot.

h$.$ Sketch a dotplot.

i$.$ Sketch a stem and leaf plot.