ex2019 {Sleuth3}

Missile Defenses

Description

Following a successful test of an anti-ballistic missile (ABM) in July 1999, many prominent U.S. politicians called for the early deployment of a full ABM system. The scientific community was less enthusiastic about the efficacy of such a system. This data set contains the success or failure of ABM tests between March 1983 and May 1995. Do these data suggest any improvement in ABM test success probability over time?

Usage

ex2019

Format

A data frame with 17 observations on the following 3 variables.

Date

date of an ABM test

Months

number of months after March 1983

Result

a factor with levels "Failure" and "Success"

Source

Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A Course in Methods of Data Analysis (3rd ed), Cengage Learning.

References

Lewis, G. N., Postol, T. A. and Pike, J. (1999) Why National Missile Defense Won't Work, Scientific American 281(2): 36–41.

Examples

str(ex2019)