Tolerance Interval plots in Minitab

N

NPDQE

#1
I am trying to figure out if 97% of my population fits within the spec limits of 10.2 and 13.8 at 95% confidence.

When I enter my data set into Minitab (see below for data set and process I take), I get an lower bound / upper bound of (10.763, 13.896).
Looking at those results, since 13.896 falls beyond 13.8, it seems 97% of my population does not fall within the spec limits.
However, since 13.896 is very close to to the USL and 10.763 is far from the spec limit, is there a way to find the area under the curve between the two spec limits? I am trying to find somewhere in Minitab where I can enter the spec limits and it tells me the percent conforming under the curve.

I can do it manually by manipulating Minitab to give me the areas under the curve by using one sided intervals but is this the correct way or the only way?
In the figures below, I am looking for C.
curve 1.PNG
curve 2.PNG

Minitab process:
Stat --> Quality Tools --> Tolerance Intervals
Confidence level = 95%
Minimum percentage of population in interval = 97%
Tolerance interval = two sided
Data set (n=5)
12.1888
12.1888
12.0716
12.7748
12.4232
 
Elsmar Forum Sponsor
Thread starter Similar threads Forum Replies Date
V Using K-Factor(Tolerance Interval) Analysis for Design Verification Statistical Analysis Tools, Techniques and SPC 3
L Need a help in finding a research paper - Patel, J. K. (1986) Tolerance interval Capability, Accuracy and Stability - Processes, Machines, etc. 2
D Tolerance symbol Inspection, Prints (Drawings), Testing, Sampling and Related Topics 8
D Calibration tolerance question using Pipettes Medical Device and FDA Regulations and Standards News 1
M Determining a tolerance value for Measuring devices in-house inspection General Measurement Device and Calibration Topics 12
G 0.00005" tolerance on micrometer with 0.0005" resolution? General Measurement Device and Calibration Topics 4
N Drawing tolerance vs. Measurement device General Measurement Device and Calibration Topics 7
I Control Plan (Product/Process specification/ Tolerance) acceptance FMEA and Control Plans 27
J Mechanical inspection techniques of close tolerance parts Inspection, Prints (Drawings), Testing, Sampling and Related Topics 4
Proud Liberal Small radius with tight tolerance on a torus General Measurement Device and Calibration Topics 4
L GRR for a tolerance that has changed Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 6
T How to justify this High %Tolerance Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 3
D Tolerance definition based on expected Cp/cpk Reliability Analysis - Predictions, Testing and Standards 14
N % Tolerance - Type 1 study on the gages, then a gage R&R (ANOVA) Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 4
S Tolerance limits for micro balance General Measurement Device and Calibration Topics 1
J Determining SPC tolerance Statistical Analysis Tools, Techniques and SPC 21
Q % Study variation low, % tolerance high - GR&R Interpretation help Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 3
R Uncertainty in measurement larger than tolerance Measurement Uncertainty (MU) 2
WEAVER Electronic Weighing Scale Calibration Tolerance Manufacturing and Related Processes 1
I Determining Calibration Tolerance of a Measurement Device General Measurement Device and Calibration Topics 2
Ronen E Tolerance intervals (?) question - Flow Rate Probability Range Statistical Analysis Tools, Techniques and SPC 6
D Tolerance when verifying an analytical balance General Measurement Device and Calibration Topics 3
E Discussion between co-worker on tolerance and uncertainty and how to apply it. Thoughts? 17025 ISO 17025 related Discussions 1
C Thread Tolerance - Can I use a 3A Ring on a part that the drawing calls out for a 2A? Manufacturing and Related Processes 5
T GRR based on part tolerance or process variation. Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 7
A Excel OOT (Out of Tolerance) Formula Excel .xls Spreadsheet Templates and Tools 3
S Question about a basic additive variance/tolerance example Quality Tools, Improvement and Analysis 2
G Assigning a calibration tolerance - An x-y coordinate machine - Uncertainty as my verification tolerance General Measurement Device and Calibration Topics 4
R Feeler Gauge Calibration - What tolerance is used for calibrating feeler gauges? General Measurement Device and Calibration Topics 4
S SPC (Statistical Process Control) for Unilateral Tolerance - Questions Statistical Analysis Tools, Techniques and SPC 6
B Gage R&R Acceptable (10-30%), deduct Total Variation from Tolerance Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 12
Y How to fix weight tolerance for plastic injection molded part? Does it vary with material groups? Manufacturing and Related Processes 1
F Position tolerance check gage manufacturing Inspection, Prints (Drawings), Testing, Sampling and Related Topics 8
M GD&T tolerance or band? Using a symbol like parallelism // Inspection, Prints (Drawings), Testing, Sampling and Related Topics 8
J What is the difference between Process Variation and Tolerance? Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 4
J Gage R&R without tolerance Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 8
A Calibration of Pressure Gauge, How to Determine Calibration Tolerance General Measurement Device and Calibration Topics 1
C Acceptable NDC for %GR&R part inspection to Tolerance (%Tolerance) Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 3
O Cpk for Unilateral Tolerance Capability, Accuracy and Stability - Processes, Machines, etc. 9
S Doubts about SPC taken in Machining - Part has +-0.01 Tolerance Statistical Analysis Tools, Techniques and SPC 5
A Calibration tolerance for data logger General Measurement Device and Calibration Topics 3
N Straightness Gage Tolerance General Measurement Device and Calibration Topics 0
G Calculating Tolerance of a Panel Meter with a 2 degrees of an Arc General Measurement Device and Calibration Topics 0
Hami812 Cpk Setting Tolerance - Cart before the Horse? (Wifi Routers) Capability, Accuracy and Stability - Processes, Machines, etc. 3
kedarg6500 Excel spreadsheet for Unilateral Tolerance Study wanted Excel .xls Spreadsheet Templates and Tools 2
U Control Charting a Feature with Bonus Tolerance Quality Tools, Improvement and Analysis 10
J Process Capability - How much percentage of tolerance? VDA Standards - Germany's Automotive Standards 3
B Gage R&R MSA - Variation, Tolerance, Variance by different methods IATF 16949 - Automotive Quality Systems Standard 23
R Fixing of tolerance limit - Electronic weighing balance with the capacity of 150 Kgs General Measurement Device and Calibration Topics 5
bobdoering Unilateral Tolerance Capability Calculations Capability, Accuracy and Stability - Processes, Machines, etc. 1

Similar threads

Top Bottom