1. For a data sample of 17 observations, we have xi = 34 and x2i = 468. i=1 i=1

Calculate:

(a) the sample mean (b) the sample standard deviation

(c) the coefficient of variation

2. Given the following data: 4211530102

Calculate:

(a) the sample median

(b) the sample range

3. An insurance company has collected the following data on the gender and marital status of 300 customers.

\f0.177 when n = 0 0.221 when n = 1 Pn = 10.276 when n = 2 0.230 when n = 3 0.096 when n = 4