A Business Analyst in a Software Design Company Reviewed a Series

question 2

Multiple Choice

A business analyst in a software design company reviewed a series of national surveys of user satisfaction (rated on a ten-point satisfaction scale) with a new gaming interface the company had recently launched. She found that the survey mean was 8. However, her standard error was high (89.5) , how should she interpret her results?

• A) The sample mean is representative of the population mean
• B) The sample mean might not be representative of the population mean
• C) The sample mean has a low standard deviation
• D) The sample has a high standard deviation

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Definitions:

Exponential Smoothing Constant

A parameter in exponential smoothing methods for forecasting that controls the degree to which recent observations are weighted more heavily than older observations.

Exponential Smoothing Model

A time series forecasting method that applies weighted averages of past observations, giving greater weight to more recent data, to predict future values.

Mean Absolute Percentage Error

A measure used to evaluate the accuracy of forecasting models, expressing the average absolute percent error between predicted and observed values.

Sales Details

Specific pieces of information related to the transactions of sales, including quantities sold, prices, dates, and customer data.