Skin_Stats_Test.Rmd

P-Value Test Per BodySite (Ultralow against the world!)
========================================================


#reading from table file
```{r,echo=FALSE}
source("~/git/preservation_stats/scripts/distribution_test.R")
skin <- read.csv("~/git/preservation_stats/presv_fig1_data/skin_fig1.csv")
```

skin
--------------------

generating variables per Preservation Method:  

```{r}
skin_ultralow = parse_vector(skin,1)
skin_nitrogen = parse_vector(skin,2)
skin_Phen_CL = parse_vector(skin,3)
skin_Fresh = parse_vector(skin,4)
```

Normality Test with Shapiro-Wilk Test :

```{r,echo=FALSE}
shapiro.test(skin_ultralow)

shapiro.test(skin_nitrogen)

shapiro.test(skin_Phen_CL)

shapiro.test(skin_Fresh)

```

Testing difference significance using Kolmogorov-Smirnov & Wilcoxon Test :  
-----------------------------------------------------------------------------


```{r}
ks.test(skin_ultralow,skin_nitrogen)
wilcox.test(skin_ultralow,skin_nitrogen)
wilcox.test(skin_ultralow,skin_nitrogen,paired=T)

ks.test(skin_ultralow,skin_Phen_CL)
wilcox.test(skin_ultralow,skin_Phen_CL)
wilcox.test(skin_ultralow,skin_Phen_CL,paired=T)

ks.test(skin_ultralow,skin_Fresh)
wilcox.test(skin_ultralow,skin_Fresh)
wilcox.test(skin_ultralow,skin_Fresh,paired=T)
```