When visualizing exam security data trends for management, I would start by using line charts to track the frequency of different security incidents over time, such as cheating, plagiarism, and unauthorized access. Line charts are effective for displaying trends and patterns, making it easier to identify any spikes or declines in incidents, which can be correlated with specific exam periods or changes in security protocols. To provide a comprehensive view, I would complement these line charts with bar charts that represent the total number of incidents or the costs associated with security measures. This combination offers both trend analysis and contextual insights. Additionally, I would use distinct colors to differentiate between types of incidents, such as red for cheating and blue for plagiarism, to enhance clarity and quick understanding. My experience with Power BI and Excel allows me to create interactive dashboards where stakeholders can drill down into specific data points, ensuring they have the information needed to make informed decisions.