ABDULHAMEED IDRIS ADEDAMOLA

Understanding True Positives and Model Accuracy with Excel When working with machine learning models, especially classification tasks, it's important to evaluate how well your model performs . One simple way to do this is using Excel —no programming needed! In this post, we’ll walk through True Positives (TP) , other related metrics, and how to visualize results. What is a True Positive (TP)? A True Positive occurs when: Your model predicts a positive outcome, and the actual outcome is also positive. Example: a COVID-19 detection model Patient Actual (Has Disease?) Predicted (Model Says?) 1 1 1 2 1 0 3 0 1 4 1 1 5 0 0 6 0 0 From this table: TP = 2 (Patients 1 and 4) TN = 2 (Patients 5 and 6) FP = 1 (Patient 3) FN = 1 (Patient 2) Step 1: Enter Data in Excel Create a table in Excel: A (Actual) B (Predicted Class) 1 1 1 0 0 1 1 1 0 0 0 0 Step 2: Compute TP, TN, FP, FN Use COUNTIFS formulas: True Positive (TP) : =C...