The student uses correct mathematical notation, symbols, and terminology consistently throughout the IA, accurately presenting formulas for Pearson's Correlation Coefficient and the t-value. Key terms, such as "Screen Time Score (STS)" and "Average Grade Score (AGS)," are defined early in the methodology, providing clarity for their significance in the study. The introduction effectively describes the main concepts, linking screen time to academic performance and outlining the methods used for data analysis. Multiple forms of mathematical representation, including tables and graphs, are utilized appropriately, and all mathematical calculations are thoroughly explained, with attention to rounding practices noted. However, the student did not consistently adhere to the practice of rounding results only at the end of calculations, which could affect accuracy.
