> fd <- read.csv(file.choose())
> fd
日期 销量
1 2015/3/1 51.00
2 2015/2/28 2618.20
3 2015/2/27 2608.40
4 2015/2/26 2651.90
5 2015/2/25 3442.10
6 2015/2/24 3393.10
7 2015/2/23 3136.60
8 2015/2/22 3744.10
9 2015/2/21 6607.40
10 2015/2/20 4060.30
> sum(complete.cases(fd))
[1] 200
> sum(!complete.cases(fd))
[1] 1
> mean(!complete.cases(fd))
[1] 0.004975124
> fd[!complete.cases(fd),]
日期 销量
15 2015/2/14 NA
title("销量")
> xi = 1.1
> sd.s=sd(fd[complete.cases(fd),]$"销量")
> mn.s = mean(fd[complete.cases(fd),]$"销量")
> points(xi,mn.s,col="red",pch=18)
> arrows(xi,mn.s - sd.s,xi,mn.s+sd.s,code=3,col="pink",angle = 75,length = .1)
> text(rep(c(1.05,1.05,0.95,0.95),length=length(sp$out)),labels = sp$out[order(sp$out)],sp$out[order(sp$out)]+rep(c(150,-150,150,-150),length=length(sp$out)),col="red")
> cor(xg[,2:11])
百合酱蒸凤爪 翡翠蒸香茜饺 金银蒜汁蒸排骨 乐膳真味鸡
百合酱蒸凤爪 1.000000000 0.009205803 0.01679933 0.45563817
翡翠蒸香茜饺 0.009205803 1.000000000 0.30443437 -0.01227936
金银蒜汁蒸排骨 0.016799326 0.304434367 1.00000000 0.03513460
乐膳真味鸡 0.455638166 -0.012279359 0.03513460 1.00000000
蜜汁焗餐包 NA NA NA NA
生炒菜心 0.308495593 -0.180446360 -0.18428973 0.32546172
铁板酸菜豆腐 0.204897840 -0.026908140 0.18727155 0.29769187
香煎韭菜饺 0.127448249 0.062344452 0.12154343 -0.06886643
香煎罗卜糕 -0.090275548 0.270276328 0.07780811 -0.03022205
原汁原味菜心 0.428316260 0.020462147 0.02907437 0.42187795
蜜汁焗餐包 生炒菜心 铁板酸菜豆腐 香煎韭菜饺 香煎罗卜糕
百合酱蒸凤爪 NA 0.30849559 0.20489784 0.12744825 -0.09027555
翡翠蒸香茜饺 NA -0.18044636 -0.02690814 0.06234445 0.27027633
金银蒜汁蒸排骨 NA -0.18428973 0.18727155 0.12154343 0.07780811
乐膳真味鸡 NA 0.32546172 0.29769187 -0.06886643 -0.03022205
蜜汁焗餐包 1 NA NA NA NA
生炒菜心 NA 1.00000000 0.36978749 0.03823316 0.04989806
铁板酸菜豆腐 NA 0.36978749 1.00000000 0.09554300 0.15795755
香煎韭菜饺 NA 0.03823316 0.09554300 1.00000000 0.17833563
香煎罗卜糕 NA 0.04989806 0.15795755 0.17833563 1.00000000
原汁原味菜心 NA 0.12298779 0.56733190 0.04968889 0.08898022
原汁原味菜心
百合酱蒸凤爪 0.42831626
翡翠蒸香茜饺 0.02046215
金银蒜汁蒸排骨 0.02907437
乐膳真味鸡 0.42187795
蜜汁焗餐包 NA
生炒菜心 0.12298779
铁板酸菜豆腐 0.56733190
香煎韭菜饺 0.04968889
香煎罗卜糕 0.08898022
原汁原味菜心 1.00000000
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