Exercise_5

Analyzing Body Mass Data of Gentoo Penguins

Objective: We will analyze body mass data of Gentoo penguins using R, perform normality tests, compare body masses between males and females, interpret the results, and visualize the data.

Tasks:

1. Load the dataset and filter it to include only Gentoo penguins (species == "Gentoo").

2. Perform a Shapiro-Wilk test (shapiro.test()) to check the normality of body mass (body_mass_g) for Gentoo penguins.

3. Separately, perform Shapiro-Wilk tests for body mass (bill_length_mm) of male and female Gentoo penguins.

4. Interpret the results of the normality tests.

5. Visualize body mass distributions for Gentoo penguins, showing comparisons between males and females using appropriate plots.

Hints:

• Use shapiro.test() for normality tests.

• Use subsetting or filtering (subset() or dplyr::filter()) to select Gentoo penguins.

• Use ggplot2 or base R plots for visualization.