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|
DESCRIPTIVE STATISTICS: GROUPED DATA |
|
Confidence
Level |
99.000% |
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|
|
Time-to-Failure Data for Bearings |
|
Significance
Level |
1.0% |
Time-to-Failure
Data for Bearings from Charles Lipson and Narendra J. Sheth, Statistical
Design and Analysis of Engineering Experiments (New York, NY: MacGraw-Hill,
Inc., 1973), pp. 403-406. |
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|
t(α/2,n-1) |
2.756385902 |
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Observations |
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Group Limits |
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|
Number of
Events [Observations] |
30 |
|
Minimum |
0 |
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|
Number of
Groups |
30 |
|
Maximum |
930 |
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|
Optimal
Number of Groups [Sturges' Rule] |
5.906890596 |
|
Range |
930 |
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Interval Midpoint |
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Group Frequencies |
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|
Mean |
362.7333333 |
|
Minimum |
1 |
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|
Median |
282 |
|
Maximum |
1 |
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Mode |
79 |
|
Range |
0 |
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|
Geometric
Mean |
284.8351413 |
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|
Harmonic
Mean |
211.7467124 |
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Population |
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Sample |
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|
Population
Standard Deviation |
240.8609811 |
|
Sample Standard Deviation |
244.9785611 |
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|
Population
Variance |
58014.01222 |
|
Sample Variance |
60014.4954 |
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|
Coefficient
of Variation |
0.664016673 |
|
Coefficient of Variation |
5.570860145 |
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|
Standard
Error of the Mean |
43.97499753 |
|
Standard Error of the Mean |
44.72676134 |
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|
99.0% Confidence Interval for Population Mean |
|
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|
99.0% Confidence Interval for Sample Mean |
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|
Lower
Limit |
L |
241.5212701 |
|
Lower
Limit |
L |
239.4491189 |
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|
Upper
Limit |
U |
483.9453966 |
|
Upper
Limit |
U |
486.0175477 |
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|
Quartiles,
Deciles, Percentiles |
|
|
99.0%
Confidence Interval for Population Mean |
|
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|
Symmetry |
|
|
Quartiles,
Deciles, Percentiles |
|
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|
Skewness |
0.80863138 |
|
Lowest |
Q0 |
D0 |
P0 |
0 |
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|
Standard
Error of Skewness (SES) |
0.426892396 |
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|
P1 |
23.7 |
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|
Skewness
Test Statistic (Skewness/SES) |
1.89422765 |
|
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|
P5 |
88.5 |
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|
Distribution's
Deviation from Symmetry |
Extended to Right |
|
|
|
D1 |
P10 |
124 |
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|
Peakedness |
|
|
Q1 |
|
P25 |
177.5 |
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|
Kurtosis |
2.526222158 |
|
Median |
Q2 |
D5 |
P50 |
282 |
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|
Standard
Error of Kurtosis (SEK) |
0.832745618 |
|
|
Q3 |
|
P75 |
535 |
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|
Excess
Kurtosis |
-0.473777842 |
|
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|
D9 |
P90 |
750 |
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|
Kurtosis
Test Statistic (Excess Kurtosis/SEK) |
-0.568934656 |
|
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|
P95 |
865 |
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|
Shape of
Distribution's Peak |
Mesokurtic |
|
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|
P99 |
918 |
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|
Distribution's
Degree of Peakedness |
Near Normal |
|
Highest |
Q4 |
D10 |
P100 |
930 |
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|
Inter-Quartile Range |
Q3-Q1 |
357.5 |
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|
Correlation |
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|
Correlation
(Pearson) CORR(τ,O) |
-- |
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|
Population Moments |
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|
Bar Lengths as % of Maximum |
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|
m1 |
-1.44003E-13 |
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|
m2 |
58014.01222 |
|
Confidence
Inteval for Mean |
100% |
|
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|
m3 |
11299258.49 |
|
Percentiles |
15% |
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|
m4 |
8502318002 |
|
Mode |
100% |
|
|
Copyright © 2010 by Macroknow Inc. All Rights
Reserved. |
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