The student clearly described how the data was obtained and processed, providing a clear methodology that outlines the steps taken, including explicit procedures for measuring and calculating data. However, the description of data recording and processing lacks precision, particularly in the formatting of uncertainties. The student did not adequately consider the impact of uncertainties on the data, as there is no clear statement of uncertainties associated with each measurement. Nonetheless, the validity of the conclusion is not hindered, as the student demonstrated a strong understanding of the relationship between temperature and calcium carbonate in toothpaste, supported by appropriate statistical analyses. The student also conducted relevant data processing to accurately address the research question, including qualitative observations and calculations of means and standard deviations.
