trees
| Attachment | Size |
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| dataset-59962.csv | 406 bytes |
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Girth, Height and Volume for Black Cherry TreesThis data set provides measurements of the girth, height and volume of timber in 31 felled black cherry trees. Note that girth is the diameter of the tree (in inches) measured at 4 ft 6 in above the ground. Usagetrees FormatA data frame with 31 observations on 3 variables.
SourceRyan, T. A., Joiner, B. L. and Ryan, B. F. (1976) The Minitab Student Handbook. Duxbury Press. ReferencesAtkinson, A. C. (1985) Plots, Transformations and Regression. Oxford University Press. Examples
require(stats); require(graphics)
pairs(trees, panel = panel.smooth, main = "trees data")
plot(Volume ~ Girth, data = trees, log = "xy")
coplot(log(Volume) ~ log(Girth) | Height, data = trees,
panel = panel.smooth)
summary(fm1 <- lm(log(Volume) ~ log(Girth), data = trees))
summary(fm2 <- update(fm1, ~ . + log(Height), data = trees))
step(fm2)
## i.e., Volume ~= c * Height * Girth^2 seems reasonable
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| Curated Data | File Size |
|---|---|
| R Dataset / Package boot / acme | 1.59 KB |
| R Dataset / Package boot / aids | 2.88 KB |
| R Dataset / Package boot / aircondit | 45 bytes |
| R Dataset / Package boot / aircondit7 | 82 bytes |
| R Dataset / Package boot / amis | 77.2 KB |
| All Public Datasets | File Size |
|---|---|
| Test | 394 bytes |
| Q1 | 332 bytes |
| prova_Correlatio | 593 bytes |
| profva | |
| test | 332 bytes |
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| Recent Queries | App/Dataset | By | Date |
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| Picostat Output - Visual Summaries | R Dataset / Package Ecdat / DoctorAUS | mehrnooshroozbahan | July 14, 2020 - 5:02 PM |
| Picostat Output - Visual Summaries | R Dataset / Package boot / aircondit7 | mehrnooshroozbahan | July 14, 2020 - 5:01 PM |
| Picostat Output - Visual Summaries | R Dataset / Package boot / aids | mehrnooshroozbahan | July 14, 2020 - 4:58 PM |
| Picostat Output - Visual Summaries | R Dataset / Package boot / aids | mehrnooshroozbahan | July 14, 2020 - 4:56 PM |
| Picostat Output - Visual Summaries | R Dataset / Package Ecdat / DoctorAUS | mehrnooshroozbahan | July 14, 2020 - 4:52 PM |
| Picostat How-To Article |
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