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Batch yields

Description:The historical percentage yields from a batch reactor for 300 sequential batches.
Data source:Then conditions were changed to try improve the yield by running 10 new batches, and these yields were recorded: \([83.5, 78.9, 82.7, 93.2, 86.3, 74.7, 81.6, 92.4, 83.6, 72.4]\). These values are not included in the downloadable dataset.

The 300 yield values may be used to create a historical reference set of typical variation, allowing one to compare whether the 10 new batches actually led to a significant improvement.

Simulated data in R:

N <- 300
phi <- -0.3
spread <- 6.7
location <- 79.9
y <- numeric(N)   # create a vector of zeros
for (k in 2:N)
{
   y[k] <- phi*y[k-1] + rnorm(1, mean=0, sd=spread)
}
y <- y + location
Data shape:300 rows and 1 columns
Usage restrictions:None
Contact person:Kevin Dunn
Contact details:datasets@connectmv.com
Added here on:02 January 2011 19:55
Last updated:18 January 2011 10:48

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Tags for this dataset

univariate
(c) Kevin Dunn, learnche.org