You perform a research study to determine if the pretreatment temperature on thr

Question

You perform a research study to determine if the pretreatment temperature on three varieties of biomass barley straw affects the conversion rate to bio-ethanol. You have three variables: pretreatment temperature, conversion rate to bio-ethanol, and biomass barley straw varieties.

a) For each variable, identify it as a dependent or independent variable.

b) For each variable, identify it as a continuous or discrete variable.

c) In this experiment, you use 200 g from each variety for the study. Does your data represent a

sample or population? Would it be possible to collect data from a population for this experiment?

Explanation / Answer

Answer:

You perform a research study to determine if the pretreatment temperature on three varieties of biomass barley straw affects the conversion rate to bio-ethanol. You have three variables: pretreatment temperature, conversion rate to bio-ethanol, and biomass barley straw varieties.

a) For each variable, identify it as a dependent or independent variable.

dependent variable: conversion rate to bio-ethanol

independent variable : pretreatment temperature

independent variable : biomass barley straw variety

b) For each variable, identify it as a continuous or discrete variable.

conversion rate to bio-ethanol : continuous

pretreatment temperature: continuous

biomass barley straw variety: discrete (three varieties)

c) In this experiment, you use 200 g from each variety for the study. Does your data represent a

sample or population? Would it be possible to collect data from a population for this experiment?

  This data represent a sample. It is possible to collect data from a population for this experiment.

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