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VEN 125 FINAL Questions and Correct
Answers
Metameric match Ans: objects with different spectral
distributions look alike under one light source but different under
another
Mesopic vision Ans: occurs at dawn or dusk and involves both
rods and cones
5 tastes Ans: sweet, sour, salty, bitter, umami
Supertasters Ans: have more papillae on the tongue, more taste
buds, and more trigeminal nerve endings
more sensitive to PTC & PROP, bitter, sweet, and salty
30 papillae sq cm vs 5
Type I Error Ans: Alpha
Falsely reject Ho (false positive)
Type II Error Ans: Beta
Falsely accept Ho (false negative)
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Paired directional Ans: Picking which sample is ____ (saltier,
sweeter, etc.)
p=.5 (one-tailed)
2 serving orders
Triangle Ans: Picking the odd sample.
p=0.33 (one-tailed)
6 serving orders
Duo-Trio Ans: Pick which is the same to a reference.
p= 0.5 (one-tailed)
Single reference = 2 serving orders
2 out of 5 test Ans: 3 cleaned and 2 spiked
P= 0.1
very fatiguing with wine
p = Probability that results could have occurred by chance alone
1‐p = Probability that a real difference was perceptible
paired preference test Ans: which do you prefer? (consumer test)
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p=0.5 (2-tailed test)
Rossler tables
Types of sensory evaluation Ans: Analytical sensory evaluation-
Interested in the WINE and its attributes
Consumer sensory evaluation-Interested in CONSUMERS reactions
to the wine
Power Ans: 1-beta
Probability of finding a difference (if one exists)- Depends on
alpha, # of judgements, size of the difference between the
samples, directionality
(one tailed has more power)
Z-test Ans: Z=(X-np)-0.5/sqrt(npq)
n= # responses
p = probability of guessing right
q = 1-p
Duo‐trio test for new blend versus old Ans: Results: p=0.059
© 2025 All rights reserved
VEN 125 FINAL Questions and Correct
Answers
Metameric match Ans: objects with different spectral
distributions look alike under one light source but different under
another
Mesopic vision Ans: occurs at dawn or dusk and involves both
rods and cones
5 tastes Ans: sweet, sour, salty, bitter, umami
Supertasters Ans: have more papillae on the tongue, more taste
buds, and more trigeminal nerve endings
more sensitive to PTC & PROP, bitter, sweet, and salty
30 papillae sq cm vs 5
Type I Error Ans: Alpha
Falsely reject Ho (false positive)
Type II Error Ans: Beta
Falsely accept Ho (false negative)
© 2025 All rights reserved
, 2 | Page
Paired directional Ans: Picking which sample is ____ (saltier,
sweeter, etc.)
p=.5 (one-tailed)
2 serving orders
Triangle Ans: Picking the odd sample.
p=0.33 (one-tailed)
6 serving orders
Duo-Trio Ans: Pick which is the same to a reference.
p= 0.5 (one-tailed)
Single reference = 2 serving orders
2 out of 5 test Ans: 3 cleaned and 2 spiked
P= 0.1
very fatiguing with wine
p = Probability that results could have occurred by chance alone
1‐p = Probability that a real difference was perceptible
paired preference test Ans: which do you prefer? (consumer test)
© 2025 All rights reserved
, 3 | Page
p=0.5 (2-tailed test)
Rossler tables
Types of sensory evaluation Ans: Analytical sensory evaluation-
Interested in the WINE and its attributes
Consumer sensory evaluation-Interested in CONSUMERS reactions
to the wine
Power Ans: 1-beta
Probability of finding a difference (if one exists)- Depends on
alpha, # of judgements, size of the difference between the
samples, directionality
(one tailed has more power)
Z-test Ans: Z=(X-np)-0.5/sqrt(npq)
n= # responses
p = probability of guessing right
q = 1-p
Duo‐trio test for new blend versus old Ans: Results: p=0.059
© 2025 All rights reserved
