FOOD SCIENCE EXAM 2 QUESTIONS
WITH CORRECT ANSWERS|| GRADED +||
LATEST UPDATE 2026
what are DFC tests -CORRECTANSWER adaptation of degree of difference test, a
discrimination sensory testing method
setup for DFC tests -CORRECTANSWER control sample and 1+ test samples
often with blind control sample
ask "evaluate control sample then rate how different each sample is"
subjects for DFC test -CORRECTANSWER 20-50 trained or untrained panelists
data analysis of DFC -CORRECTANSWER analysis of variance (ANOVA)
why choose DFC test -CORRECTANSWER - measures perceived difference
- more flexible than triangle or duo-trio test
- know there is a difference and want to know HOW different (natural variability
products)
application of DFC test -CORRECTANSWER quality control and assurance
shelf life test
batch to batch
, product dvlpmt
ingredient subs
limitations of DFC test -CORRECTANSWER not why there is a difference
not measure direction of difference
not measure preference
requires additional questions to pinpoint issues
quantitative data -CORRECTANSWER can be measured with numbers, such as
duration or speed
qualitative data -CORRECTANSWER non-numerical data that is categorical, such as
yes/no responses or eye color
types of quantitative data -CORRECTANSWER discrete - whole numbers, ex. # of
items
continuous - decimals, ex. heigh or weight
types of continuous data -CORRECTANSWER interval - known differences between
variables, ex. time
ratio - measurable intervals ex. height or weight
types of qualitative data -CORRECTANSWER nominal - naming variables
WITH CORRECT ANSWERS|| GRADED +||
LATEST UPDATE 2026
what are DFC tests -CORRECTANSWER adaptation of degree of difference test, a
discrimination sensory testing method
setup for DFC tests -CORRECTANSWER control sample and 1+ test samples
often with blind control sample
ask "evaluate control sample then rate how different each sample is"
subjects for DFC test -CORRECTANSWER 20-50 trained or untrained panelists
data analysis of DFC -CORRECTANSWER analysis of variance (ANOVA)
why choose DFC test -CORRECTANSWER - measures perceived difference
- more flexible than triangle or duo-trio test
- know there is a difference and want to know HOW different (natural variability
products)
application of DFC test -CORRECTANSWER quality control and assurance
shelf life test
batch to batch
, product dvlpmt
ingredient subs
limitations of DFC test -CORRECTANSWER not why there is a difference
not measure direction of difference
not measure preference
requires additional questions to pinpoint issues
quantitative data -CORRECTANSWER can be measured with numbers, such as
duration or speed
qualitative data -CORRECTANSWER non-numerical data that is categorical, such as
yes/no responses or eye color
types of quantitative data -CORRECTANSWER discrete - whole numbers, ex. # of
items
continuous - decimals, ex. heigh or weight
types of continuous data -CORRECTANSWER interval - known differences between
variables, ex. time
ratio - measurable intervals ex. height or weight
types of qualitative data -CORRECTANSWER nominal - naming variables
