Hubble Telescope

The Hubble Space Telescope was put into orbit on April 25, 1990. Unfortunately, on June 25, 1990, a spherical aberration was discovered in Hubble's primary mirror. To correct this, astronauts had to work in space. To prepare for the mission, two teams of astronauts practiced making repairs under simulated space conditions. Each team of astronauts went through 15 identical scenarios. The times to complete each scenario were recorded in days.

Format

A data frame with 15 observations on the following 2 variables:

Team1

days to complete scenario

Team2

days to complete scenario

Source

Ugarte, M. D., Militino, A. F., and Arnholt, A. T. (2008) Probability and Statistics with R. Chapman & Hall/CRC.

Examples

with(data = Hubble,
qqnorm(Team1 - Team2))
with(data = Hubble,
qqline(Team1 - Team2))
# Trellis Approach
qqmath(~(Team1 - Team2), data = Hubble, type=c("p", "r"))