A6Q3

install.packages(“dplyr”) install.packages(“effectsize”) install.packages(“effsize”)

library(readxl)

## Warning: package 'readxl' was built under R version 4.4.3

library(ggpubr)

## Warning: package 'ggpubr' was built under R version 4.4.3

## Loading required package: ggplot2

## Warning: package 'ggplot2' was built under R version 4.4.3

library(dplyr)

## Warning: package 'dplyr' was built under R version 4.4.3

## 
## Attaching package: 'dplyr'

## The following objects are masked from 'package:stats':
## 
##     filter, lag

## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union

library(effectsize)

## Warning: package 'effectsize' was built under R version 4.4.3

library(effsize)

## Warning: package 'effsize' was built under R version 4.4.3

A6Q32 <- read_excel("C:/Users/vinay_17rmu0l/Downloads/A6Q3-2.xlsx")
A6Q32 %>%
  group_by(Exercise) %>%
  summarise(
    Mean = mean(Weight, na.rm = TRUE),
    Median = median(Weight, na.rm = TRUE),
    SD = sd(Weight, na.rm = TRUE),
    N = n()
  )

## # A tibble: 2 × 5
##   Exercise  Mean Median    SD     N
##   <chr>    <dbl>  <dbl> <dbl> <int>
## 1 cardio    74.7   73.3  7.57    25
## 2 nocardio  70.8   69.5  7.35    25

hist(A6Q32$Weight[A6Q32$Exercise == "cardio"],
     main = "Histogram of Cardio Group (Weight)",
     xlab = "Weight (kg)",
     ylab = "Frequency",
     col = "lightblue",
     border = "black",
     breaks = 10)

hist(A6Q32$Weight[A6Q32$Exercise == "nocardio"],
     main = "Histogram of No Cardio Group (Weight)",
     xlab = "Weight (kg)",
     ylab = "Frequency",
     col = "lightgreen",
     border = "black",
     breaks = 10)

Group 1: cardio The first variable looks [normally] distributed. The data is [symmetrical]. The data [has] a proper bell curve.

Group 2: nocardio The second variable looks [normally] distributed. The data is [symmetrical]. The data [has] a proper bell curve.

ggboxplot(A6Q32, x = "Exercise", y = "Weight",
          color = "Exercise",
          palette = "jco",
          add = "jitter")

Boxplot 1: cardio There [are] dots outside the boxplot. The dots [are] close to the whiskers. The dots [are not] very far away from the whiskers. The outliers [are] balanced. Based on these findings, the boxplot is [normal]

Boxplot 2: nocardio There [are] dots outside the boxplot. The dots [are] close to the whiskers. The dots [are not] very far away from the whiskers. The outliers [are] balanced. Based on these findings, the boxplot is [normal]

shapiro.test(A6Q32$Weight[A6Q32$Exercise == "cardio"])

## 
##  Shapiro-Wilk normality test
## 
## data:  A6Q32$Weight[A6Q32$Exercise == "cardio"]
## W = 0.96745, p-value = 0.5812

shapiro.test(A6Q32$Weight[A6Q32$Exercise == "nocardio"])

## 
##  Shapiro-Wilk normality test
## 
## data:  A6Q32$Weight[A6Q32$Exercise == "nocardio"]
## W = 0.97686, p-value = 0.8166

Group 1: cardio The first group is [normally] distributed, (p = .581).

Group 2: nocardio The second group is [normally] distributed, (p = .817).

t.test(Weight ~ Exercise, data = A6Q32, var.equal = TRUE)

## 
##  Two Sample t-test
## 
## data:  Weight by Exercise
## t = 1.8552, df = 48, p-value = 0.06971
## alternative hypothesis: true difference in means between group cardio and group nocardio is not equal to 0
## 95 percent confidence interval:
##  -0.3280454  8.1605622
## sample estimates:
##   mean in group cardio mean in group nocardio 
##               74.73336               70.81710

An Independent T-Test was conducted to determine if there was a difference in Weight between cardio and nocardio. Group 1 scores (M = 74.7 SD =7.57 ) were [not significantly] different from Group2 scores (M = 70.8, SD = 7.35), t(48) = 1.86, p >.05