A central composite design with 4 factors in 2 blocks. These data
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.
a factor with levels
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.
a numeric vector. Coded wing area,
x1 ~ (A - 12.4)/.6
a numeric vector. Coded length ratio,
x2 ~ (R - 2.52)/.26
a numeric vector. Coded body width,
x3 ~ (W - 1.25)/.25
a numeric vector. Coded body length,
x4 ~ (L - 2)/.5
a numeric vector. Average flight time, in csec.
a numeric vector. 100*log(SD of times).
Table 12.5 of Box, GEP, Hunter, JS, and Hunter, WG (2005) Statistics for Experimenters (2nd ed.), Wiley.
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