Ten Apples Are Taken Off the Top of a Truckload

question 45

Multiple Choice

Ten apples are taken off the top of a truckload of apples,and the amount of bruising on those apples is measured in order to estimate how much bruising there is,on average,in the whole truckload.Is this a simple random sample?

• A) yes
• B) no
• C) It depends on whether the apples were in a clump or from across the top of the truck.
• D) More information is needed to answer the question.

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Definitions:

Mean Squared Error

A measure of the average of the squares of the errors or deviations, that is, the difference between the estimator and what is estimated.

Tracking Signal

A statistical measure used in quality control and forecasting to detect bias in the forecast error over time.

Simple Moving Average

A mathematical method used in finance and economics to calculate the average of a selected range of prices or quantities over a specific period of time.

Exponential Smoothing

Exponential smoothing is a forecasting technique that applies decreasing weights to past observations, with more recent data given more significance.