Varatta Enterprises sells industrial plumbing valves. The following table lists the annual sales amounts for the different salespeople in the organization for the most recent fiscal year.?

a. Compute the mean, variance, and standard deviation for these annual sales values.?

b. In the previous fiscal year, the average annual sales amount was $300,000 with a standard deviation of $95,000. Discuss any differences you observe between the annual sales amount in the most recent and previous fiscal years.

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Salesperson Joseph Jennifer Phillip Stanley Luke Lexie Sales Amount ($1000) 147 232 547 328 295 194 368 Salesperson Wei Samantha Erin Dominic Sales Amount ($1000) 465 410 298 321 190 211 413 Charlie Amol Lenisa Margaret