Walmart collects data that depicts the number of customers who return merchandisefor a refund. The following data shows the population returns for all 10 Tuesdays.40 12 1746 13 22259167Assume that this same exact pattern of data were replicated for the next ten days.How would this affect the standard deviation for the new population with 20 items?(Hint: Find the standard deviation first).The standard deviation would not be changed.There is no way of knowing the exact impact without knowing how the mean ischanged.The standard deviation would be doubled.The standard deviation would be cut in half.

To ensure what happen to the standard deviation, we will be going to solve it manually. when n =…

Answered: Walmart collects data that depicts the…

Understanding Business

12th Edition

ISBN:9781259929434

Author:William Nickels

Publisher:William Nickels

Chapter1: Taking Risks And Making Profits Within The Dynamic Business Environment

Section: Chapter Questions

Problem 1CE

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Which of the following are common metrics for measuring the relative quality of different forecasting methods? OAbsolutely Mean Mean Squared Accuracy O Mean Absolute Percent Error Mean Squared Response OMean Squared Error Mean Absolute Error (a.k.a. Mean Absolute Deviation)
Four sampling strategies have been proposed to help a bank determine whether customers favour opening on Saturdays versus keeping branches open longer during the week. For each, discuss what kind of sampling strategy is involved and what (if any) biases might result. (a) Sponsor a commercial during a TV program, asking people to dial one of two phone numbers to indicate which option they prefer. (b) Hold a meeting at each branch and tally the opinions expressed by those who attend the meetings. (c) Randomly select one day at each branch and contact every customer who visits the branch that day. (d) Go through the bank’s customer records, selecting every 100th customer. Hire a survey research company to interview the people chosen.
d) Using exponential smoothing with α = 0.40 and the forecast for year 1 being 3,000, the forecast for year 6 = ? miles (round your response to the nearest whole number).
Given the following historical data, what is the simple three-period moving average forecast for period 6? Period Value 1 73 2 68 3 65 4 72 5 67
The following gives the number of accidents that occurred on Florida State Highway 101 during the last 4 months: Month Jan Feb Mar Apr Number of Accidents 30 48 70 90 Part 2 Using the least-squares regression LOADING... method, the trend equation for forecasting is (round your responses to two decimal places): y = enter your response here + enter your response here x Y=?+?x
In multiple regression analysis, testing the significance of individual regression coefficients is based on A t statistic A z statistic An F statistic
help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working
Which term most closely relates to associative forecasting techniques? Select one: a. time series data Ob. linear relationships Oc. the Delphi technique O d. consumer survey O e. predictor variables
(Use an excel file to show formulas used)

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