Description Usage Format Source References Examples

This data frame contains data on characteristics and numbers of
*failures* observed in valve types from one pressurised water
reactor.

1 |

A data frame with 90 observations on the following 7 variables.

`System`

System, factor with 5 levels

`Operator`

Operator type, factor with 4 levels

`Valve`

Valve type, factor with 6 levels

`Size`

Head size, factor with 3 levels (less than 2 inches, 2–10 inches and 10–30 inches)

`Mode`

Operation mode, factor with 2 levels

`Failures`

Number of failures observed

`Time`

Lengths of observation time

Ramsey, F.L. and Schafer, D.W. (2002). *The Statistical Sleuth: A
Course in Methods of Data Analysis (2nd ed)*, Duxbury.

Moore, L.M. and Beckman, R.J. (1988). Appropriate One-Sided Tolerance
Bounds on the Number of Failures using Poisson Regression,
*Technometrics* **30**: 283–290.

1 |

```
'data.frame': 90 obs. of 7 variables:
$ System : Factor w/ 5 levels "containment",..: 1 1 1 2 2 2 2 2 2 2 ...
$ Operator: Factor w/ 4 levels "air","solenoid",..: 3 3 3 1 1 1 1 1 1 1 ...
$ Valve : Factor w/ 6 levels "ball","butterfly",..: 4 4 5 2 3 3 5 5 5 5 ...
$ Size : Factor w/ 3 levels "<2","2-10","10-30": 3 3 1 2 2 2 1 1 2 2 ...
$ Mode : Factor w/ 2 levels "closed","open": 1 2 1 2 1 2 1 2 1 2 ...
$ Failures: num 2 2 1 0 0 0 2 4 1 2 ...
$ Time : num 4 4 2 2 2 1 4 6 1 1 ...
```

Sleuth2 documentation built on May 31, 2017, 4:59 a.m.

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