Formative_Assesment_

Author

Kathryn Skazick, Kaenat Gul, Yasiru Dilshan, Kamran Bin Lateef, Inusa Yawuza Musa

Mosquitos Data Set:

This data set contains information on 100 mosquitos providing their sex and wingspan.

Sex is a categorical factor and wingspan is continuous (numerical)

The data can be represented as a box plot

library(tidyverse)

mosquitos <- read.table("C://Users//kathr//OneDrive//Documents//mosquitos.txt", header = TRUE)

ggplot(mosquitos, aes(x= sex, y= wing, fill = sex))+
  geom_boxplot(show.legend = FALSE)+
  labs(x= "Sex", y= "Wing Span (mm)", title = "Comparison of wing spans of male and female mosquitos")

To test if there is a statistical difference in the means of males vs female we can perform a t-test :

t.test(wing ~ sex, data = mosquitos)


    Welch Two Sample t-test

data:  wing by sex
t = -1.6686, df = 97.324, p-value = 0.09842
alternative hypothesis: true difference in means between group f and group m is not equal to 0
95 percent confidence interval:
 -7.0098735  0.6064862
sample estimates:
mean in group f mean in group m 
       47.17738        50.37907

p = 0.09842

This means that we cannot say there is a statistical difference in the wingspan between males and females.

Student ID

N1344796

N1325553

N1301242

N1340143

N1349229