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ASQ CSSBB Exam - Topic 3 Question 54 Discussion

An x-bar and R chart is used to monitor a process. One week ago a new type of raw material was introduced and since that time 60 points have been plotted on the xbar chart and all are in the middle third of the chart. The corresponding 60 points on the R chart are all below the average range. This indicates that:
C) it is time to recalculate the control limits
A) the operator has been plotting the points incorrectly
B) it is time to recalibrate the gage used
D) the material manager should be asked to go back to the previous raw material so the charts will more accurately reflect the process

ASQ CSSBB Exam - Topic 3 Question 54 Discussion

Actual exam question for ASQ's CSSBB exam
Question #: 54
Topic #: 3
[All CSSBB Questions]

An x-bar and R chart is used to monitor a process. One week ago a new type of raw material was introduced and since that time 60 points have been plotted on the xbar chart and all are in the middle third of the chart. The corresponding 60 points on the R chart are all below the average range. This indicates that:

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Suggested Answer: C

by Markus at Jun 22, 2022, 11:00 PM

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Chauncey
8 months ago
Agree, recalibrating the gage might be necessary too.
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Pamella
8 months ago
Wait, all points in the middle third? That can't be right.
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Allene
9 months ago
I think the operator is just plotting it wrong.
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Erinn
9 months ago
Definitely time to recalculate the control limits!
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Arletta
9 months ago
Seems like the points are all clustered, that's odd.
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Almeta
9 months ago
This reminds me of a practice question where we had to decide if the control limits needed recalculating after a change in materials. I think that might be relevant here too.
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Gearldine
9 months ago
I think if the R chart points are all below average, it might suggest something's off with the measurement system, but I can't recall if that means recalibrating the gauge or something else.
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Lashanda
9 months ago
I remember we discussed how consistent points in the middle third could indicate a lack of variation, but I'm not sure what that means for recalibrating or recalculating limits.
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Domitila
9 months ago
I feel like asking the material manager to switch back could be a drastic step, but if the new material is causing issues, it might be worth considering.
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Loise
9 months ago
Okay, I think I've got this. The two main use cases are option A, for team development and distribution via the AppExchange, and option D, for deploying a custom app from a sandbox to production using the Metadata API.
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Lai
9 months ago
I'm not totally sure about this one, but I think the first department store was probably in a major city like New York or Chicago. I'll have to think it through carefully.
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Breana
10 months ago
Ah, I've got this! The difference between the flexible budget and actual revenue must be the revenue variance. I'll write that down confidently.
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Shawna
10 months ago
Okay, let's see. I think the key is to promote variability in the teaching environment and stimuli, rather than keeping things constant. So I'd go with option A - "teach loosely."
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