Exploratory Analysis & Hypothesis Testing: Tooth Growth in Guinea Pigs by Vitamin C Dose and Delivery Method

Exploratory Analysis & Hypothesis Testing: Tooth Growth in Guinea Pigs by Vitamin C Dose and Delivery Method

Date
October 29, 2023
Tags
R

Motive/Background

This analysis is part 2 of 2 of the Statistical Inference course project of John Hopkins University’s Data Science Specialization course. This second section of the project investigates the ToothGrowth dataset and provides a general exploratory analysis before performing hypothesis tests to determine if there are statistically significant differences in tooth growth by vitamin C dosage and delivery method.

Data

The ‘ToothGrowth’ dataset from the R ‘datasets’ library was used for this analysis. This dataset contains information regarding the effect of Vitamin C dosage on tooth growth in guinea pigs.

The response is the length of odontoblasts (cells responsible for tooth growth) in 60 guinea pigs. Each animal received one of three dose levels of vitamin C (0.5, 1, and 2 mg/day) by one of two delivery methods, orange juice or ascorbic acid (a form of vitamin C and coded as VC).

Writeup

Click the link below to view the full RPubs writeup/report for this project with all of the included code