heli {rsm} | R Documentation |
A central composite design with 4 factors in 2 blocks. These data
comprise a coded.data
object.
heli
A data frame with 30 observations on the following 7 variables. Each observation reflects the results of 10 replicated flights under the same experimental conditions.
block
1
2
.
Block 1 consists of 18 observations (a full factorial plus two center points).
Block 2 consists of 12 observations – 8 axis points and 4 center points.x1
x1 ~ (A - 12.4)/.6
x2
x2 ~ (R - 2.52)/.26
x3
x3 ~ (W - 1.25)/.25
x4
x4 ~ (L - 2)/.5
ave
logSD
Table 12.5 of Box, GEP, Hunter, JS, and Hunter, WG (2005), Statistics for Experimenters (2nd ed.), Wiley.