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library(tidyverse)

## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ──
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## ✔ forcats   1.0.1     ✔ stringr   1.6.0
## ✔ ggplot2   4.0.0     ✔ tibble    3.3.0
## ✔ lubridate 1.9.4     ✔ tidyr     1.3.1
## ✔ purrr     1.2.0     
## ── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
## ✖ dplyr::filter() masks stats::filter()
## ✖ dplyr::lag()    masks stats::lag()
## ℹ Use the conflicted package (<http://conflicted.r-lib.org/>) to force all conflicts to become errors

library(lsr)
library(broom)
library(ggplot2)

egzersiz_yapan<-c(18,20,22,19,17,21,23,20)
egzersiz_yapmayan<-c(25,28,30,27,26,29,31,28)
stres <-c(egzersiz_yapan,egzersiz_yapmayan)
grup<-factor(c(rep("Yapan",length(egzersiz_yapan)),
               rep("Yapmayan",length(egzersiz_yapmayan))))
egzersiz_veri<-data_frame(grup,stres)

## Warning: `data_frame()` was deprecated in tibble 1.1.0.
## ℹ Please use `tibble()` instead.
## This warning is displayed once every 8 hours.
## Call `lifecycle::last_lifecycle_warnings()` to see where this warning was
## generated.

egzersiz_veri

## # A tibble: 16 × 2
##    grup     stres
##    <fct>    <dbl>
##  1 Yapan       18
##  2 Yapan       20
##  3 Yapan       22
##  4 Yapan       19
##  5 Yapan       17
##  6 Yapan       21
##  7 Yapan       23
##  8 Yapan       20
##  9 Yapmayan    25
## 10 Yapmayan    28
## 11 Yapmayan    30
## 12 Yapmayan    27
## 13 Yapmayan    26
## 14 Yapmayan    29
## 15 Yapmayan    31
## 16 Yapmayan    28

sonuc_egzersiz<-wilcox.test(stres~grup,data = egzersiz_veri)

## Warning in wilcox.test.default(x = DATA[[1L]], y = DATA[[2L]], ...): cannot
## compute exact p-value with ties

sonuc_egzersiz

## 
##  Wilcoxon rank sum test with continuity correction
## 
## data:  stres by grup
## W = 0, p-value = 0.0009229
## alternative hypothesis: true location shift is not equal to 0

wilcox.test(egzersiz_yapan,egzersiz_yapmayan)

## Warning in wilcox.test.default(egzersiz_yapan, egzersiz_yapmayan): cannot
## compute exact p-value with ties

## 
##  Wilcoxon rank sum test with continuity correction
## 
## data:  egzersiz_yapan and egzersiz_yapmayan
## W = 0, p-value = 0.0009229
## alternative hypothesis: true location shift is not equal to 0

wilcox.test(stres~grup,data = egzersiz_veri) %>%
  tidy()

## Warning in wilcox.test.default(x = DATA[[1L]], y = DATA[[2L]], ...): cannot
## compute exact p-value with ties

## # A tibble: 1 × 4
##   statistic  p.value method                                          alternative
##       <dbl>    <dbl> <chr>                                           <chr>      
## 1         0 0.000923 Wilcoxon rank sum test with continuity correct… two.sided

ggplot(egzersiz_veri,aes(x=grup,y=stres,fill=grup))+
  geom_boxplot(alpha=0.6)+
  geom_jitter(width = 0.1,alpha=0.6)+
  labs(title = "Egzersiz Durumuna Göre Stres",
       x="Grup",
       y="Stres Puanı")+
  theme_minimal()

DÜZENLİ EGZERSİZ YAPAN VE YAPMAYAN ÖĞRENCİLERİN STRES DÜZEYLERİ ARASINDA ANLAMLI FARK BULUNMUŞTUR.(W=0,p<.0.01),EGZERSİZ YAPMAYAN ÖĞRENCİLERİN STRES DÜZEYİ DAHA YÜKSEKTİR.