case0401 {Sleuth2}

Space Shuttle

Description

The number of space shuttle O-ring incidents for 4 space shuttle launches when the air temperatures was below 65 degrees F and for 20 space shuttle launches when the air temperature was above 65 degrees F.

Usage

case0401

Format

A data frame with 24 observations on the following 2 variables.

Incidents

the number of O-ring incidents

Launch

factor variable with two levels—"Cool" and "Warm"

Source

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

References

Feynman, R.P. (1988). What do You Care What Other People Think? W. W. Norton.

See Also

ex2011, ex2223

Examples

str(case0401)
stem(subset(case0401, Launch=="Cool", Incidents, drop=TRUE))
stem(subset(case0401, Launch=="Warm", Incidents, drop=TRUE))