You Are a Student Working in the Laboratory of a Researcher

question 23

Multiple Choice

You are a student working in the laboratory of a researcher who studies rainbow trout. A power outage over the weekend results in temperatures of over 25C in the large pools which house the fish. When you arrive Monday morning you notice the fish are swimming on their sides or swimming in spirals. What conclusions can you draw?

• A) the fish are suffering thermal stress
• B) the fish are experiencing improper neuronal function
• C) the affinity of acetylcholinesterase for acetylcholine is reduced
• D) the temperature of the water is affecting fish enzyme shape and flexibility
• E) All of the choices are correct.

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Definitions:

Regression Method

A statistical process for estimating the relationships among variables, often used to predict the value of a dependent variable based on one or more independent variables.

Industrial Lathe Sales

The measure of the quantity of industrial lathes sold within a specific period; pertains to transactions in the manufacturing sector.

MAPE

Mean Absolute Percentage Error, a measure used to calculate the accuracy of forecasted values in statistics, expressing error as a percentage.

Double Exponential Smoothing

A forecasting method that applies exponential smoothing twice, useful in capturing trends and seasonality in data.