Varatta Enterprises sells industrial plumbing valves. The following table lists the annual sales amounts for a portion of the salespeople in the organization for th most recent fiscal year. Click on the datafile logo to reference the data. DATA file Salesperson Joseph Jennifer Mean $ Sales Amount ($1000) Salesperson Sales Amount ($1000) 118 470 235 413 566 241 315 316 188 259 185 343 Wel Phillip Stanley Luke Lexie Margaret a. Compute the mean (in $1000), variance (in $10002), and standard deviation (in $1000) for these annual sales values. Round your answers to the nearest whole number. Samantha Erin Dominic Charlie Amol Lenisa thousand thousand² Variance Standard deviation S thousand b. In the previous fiscal year, the average annual sales amount was $289 thousand with a standard deviation of $90 thousand. Discuss any differences you observe between the annual sales amount in the most recent and previous fiscal years. (i) The difference in the mean annual sales amount is very small and is most likely due to random change in demand for these products. (ii) The sample mean annual sales amount and standard deviation for the previous fiscal year were significantly higher. (iii) The sample mean annual sales amount and standard deviation for the previous fiscal year were significantly lower. Choose the correct option. Choice (i) 217 429

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Transcribed Image Text:Varatta Enterprises sells industrial plumbing valves. The following table lists the annual sales amounts for a portion of the salespeople in the organization for the most recent fiscal year. Click on the datafile logo to reference the data. DATA file Sales Amount ($1000) Salesperson Sales Amount ($1000) 118 470 235 413 Phillip 566 241 Stanley 315 316 Luke 259 188 185 217 Lexie Margaret 343 429 a. Compute the mean (in $1000), variance (in $10002), and standard deviation (in $1000) for these annual sales values. Round your answers to the nearest whole number. Mean $ Salesperson Joseph Jennifer thousand thousand² thousand Wel Samantha Erin Dominic Charlie Amol Lenisa Variance Standard deviation S b. In the previous fiscal year, the average annual sales amount was $289 thousand with a standard deviation of $90 thousand. Discuss any differences you observe between the annual sales amount in the most recent and previous fiscal years. (i) The difference in the mean annual sales amount is very small and is most likely due to random change in demand for these products. (ii) The sample mean annual sales amount and standard deviation for the previous fiscal year were significantly higher. (iii) The sample mean annual sales amount and standard deviation for the previous fiscal year were significantly lower. Choose the correct option. Choice (i)

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