# OpenMV.net Datasets

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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 The 300 yield values may be used to create a historical reference set of typical variation, allowing one to compare whether the 10 new batches actually led to a significant improvement.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: kgdunn@gmail.com Added here on: 02 January 2011 19:55 Last updated: 11 November 2018 16:30