A small count data set. During WWII V2 missiles were fired from the continent mainly towards London. The number of hits per square grid around London were recorded.
A data frame with the following variables.
Values between 0 and 3.
Observed frequency, i.e., the number of grids with that many hits.
The data concerns 408 square grids each of 0.25 square kms
about south London (south of the River Thames).
They were picked in a rectangular region of 102 square kilometres
where the density of hits were roughly uniformly distributed.
The data is somewhat comparable to
is a smaller data set.
Shaw, L. P. and Shaw, L. F. (2019). The flying bomb and the actuary. Significance, 16(5): 12–17.
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V2 mean(with(V2, rep(hits, times = ofreq))) var(with(V2, rep(hits, times = ofreq))) sum(with(V2, rep(hits, times = ofreq))) ## Not run: barplot(with(V2, ofreq), names.arg = as.character(with(V2, hits)), main = "London V2 rocket hits", col = "lightgreen", las = 1, ylab = "Frequency", xlab = "Hits") ## End(Not run)
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