faithful(datasets)
faithful()所属R语言包:datasets
Old Faithful Geyser Data
老忠实喷泉数据
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Waiting time between eruptions and the duration of the eruption for the Old Faithful geyser in Yellowstone National Park, Wyoming, USA.
爆发,美国怀俄明州黄石国家公园的老忠实喷泉的喷发持续时间之间的等待时间。
用法----------Usage----------
格式----------Format----------
A data frame with 272 observations on 2 variables.
与272两个变量的观测数据框。
eruptions
喷发
waiting
等候
Details
详情----------Details----------
A closer look at faithful$eruptions reveals that these are heavily rounded times originally in seconds, where multiples of 5 are more frequent than expected under non-human measurement. For a better version of the eruption times, see the example below.
在faithful$eruptions细看发现,这些都是严重四舍五入倍原本在几秒钟内,5的倍数比预期在非人类的测量更加频繁。为更好的版本的喷发时间,请参阅下面的例子。
There are many versions of this dataset around: Azzalini and Bowman (1990) use a more complete version.
有很多版本,本集周围:Azzalini和鲍曼(1990年)使用一个更完整的版本。
源----------Source----------
W. H鋜dle.
W·H·rdle。
参考文献----------References----------
Smoothing Techniques with Implementation in S. New York: Springer.
A look at some data on the Old Faithful geyser. Applied Statistics 39, 357–365.
参见----------See Also----------
geyser in package MASS for the Azzalini–Bowman version.
geyser包MASS,为Azzalini鲍曼版本的。
举例----------Examples----------
require(stats); require(graphics)
f.tit <- "faithful data: Eruptions of Old Faithful"
ne60 <- round(e60 <- 60 * faithful$eruptions)
all.equal(e60, ne60) # relative diff. ~ 1/10000[相对差异。 〜1/10000]
table(zapsmall(abs(e60 - ne60))) # 0, 0.02 or 0.04[0,0.02或0.04]
faithful$better.eruptions <- ne60 / 60
te <- table(ne60)
te[te >= 4] # (too) many multiples of 5 ![5(太)许多倍!]
plot(names(te), te, type="h", main = f.tit, xlab = "Eruption time (sec)")
plot(faithful[, -3], main = f.tit,
xlab = "Eruption time (min)",
ylab = "Waiting time to next eruption (min)")
lines(lowess(faithful$eruptions, faithful$waiting, f = 2/3, iter = 3),
col = "red")
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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