ex2223 {Sleuth2}

Space Shuttle O-Ring Failures

Description

On January 27, 1986, the night before the space shuttle Challenger exploded, an engineer recommended to the National Aeronautics and Space Administration (NASA) that the shuttle not be launched in the cold weather. The forecasted temperature for the Challenger launch was 31 degrees Fahrenheit—the coldest launch ever. After an intense 3-hour telephone conference, officials decided to proceed with the launch. This data frame contains the launch temperatures and the number of O-ring problems in 24 shuttle launches prior to the Challenger.

Usage

ex2223

Format

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

Temp

Launch temperatures (in degrees Fahrenheit)

Incident

Numbers of O-ring incidents

Source

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

See Also

case0401, ex2011

Examples

str(ex2223)