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If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16 experimental runs which statement is incorrect?
Suggested Answer: C
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29 comments · newest first
AN
Anglea
9 months ago
Not sure about B, feels off to me.
MA
Maile
10 months ago
C is tricky, but I think it's correct.
MI
Micheline
10 months ago
Wait, how can D have 8 runs? That doesn't add up!
LY
Lynelle
10 months ago
I agree, B seems right too.
CH
Chandra
11 months ago
A is definitely half-fractional.
SH
Shelia
11 months ago
I’m pretty sure that if there are 5 factors, we can't have just 8 runs, so option D seems incorrect to me.
ME
Mee
11 months ago
I feel like option C might be tricky because it mentions confounding, and I remember that being a common issue in these designs.
FL
Flo
11 months ago
I think I saw a similar question where main effects were confounded with interactions, but I can't recall the specifics.
GO
Goldie
12 months ago
I remember studying fractional factorial designs, but I'm not entirely sure if 16 runs means it's half-fractional or not.
VE
Vernice
12 months ago
This seems straightforward enough. I'm pretty confident I can identify the incorrect statement based on my understanding of 2-level factorial designs.
DY
Dylan
1 year ago
I've got a good strategy for this. I'll start by identifying the key characteristics of the design, then use that to evaluate each of the statements and determine which one is incorrect.
DE
Delmy
1 year ago
I'm a bit confused by the wording of the question. Can someone help me understand the difference between "confounded" and "aliased" in the context of this problem?
RE
Reita
1 year ago
Okay, let's see. 5 factors, 2-level design, 16 runs... I think I know the answer, but I want to double-check my work before committing to an option.
JE
Jeanice
1 year ago
Hmm, this looks like a tricky one. I'll need to think through the details of the experimental design to figure out which statement is incorrect.
LU
Lura
1 year ago
I'm not sure, but I think the Experimental Design is half-fractional
LE
Leana
1 year ago
I disagree, I believe the correct statement is C)
HU
Hubert
1 year ago
Hmm, this question is giving me a headache. Maybe I should have skipped the caffeine today.
KA
Kati
9 months ago
I think D is the one that's incorrect.
AU
Audria
10 months ago
I feel you, it's confusing.
EU
Eun
10 months ago
This question is tricky!
TH
Thurman
11 months ago
Agreed, D doesn't seem right at all.
AD
Adolph
1 year ago
I think the correct statement is B)
YU
Yuette
1 year ago
B is wrong. The main effects are confounded with 4-way interactions, not just 4-way.
RE
Rebecka
1 year ago
A) The Experimental Design is half-fractional
ZO
Zoila
1 year ago
I'm going with A. A half-fractional design with 5 factors and 16 runs is the way to go here.
TO
Toi
1 year ago
A) The Experimental Design is half-fractional
MA
Makeda
1 year ago
D is definitely incorrect. With 5 factors and a 2-level design, there should be 32 experimental runs, not 8.
TA
Tatum
1 year ago
I think C is the correct answer. The main effects are not confounded, but the 2-way interactions are confounded with the 3-way interactions.
MO
Moon
1 year ago
I think C is the correct answer.