This project presents a comprehensive analysis of student exam data, focusing on the correlation between preparation time and exam marks. The research employs a cross-sectional survey using questionnaires, collected through convenience sampling. The analysis includes descriptive statistics such as mean, median, standard deviation, and the construction of histograms and scatter plots to visualize the data. Pearson's correlation is used to assess the strength of the relationship between preparation hours and marks, finding a significant positive correlation. The project further involves constructing confidence intervals, performing hypothesis testing to determine if average preparation time exceeds a certain threshold, and estimating a linear regression equation to model the relationship between preparation hours and marks. The coefficient of determination (R-squared) is calculated to quantify the explanatory power of preparation time on marks, and the results are interpreted in the context of the study's limitations. References to relevant literature support the methodologies and findings.