Feature Guide: “Safe to Skip” Logic

Overview

The AttendanceTracker app uses mathematical formulas to help you manage your attendance strategically. It calculates exactly how many classes you can afford to miss while staying above your target percentage, or how many you must attend to get back on track.

Logic & Formulas

The app uses your Current Attendance (Present/Total) and your Target Percentage (set in the app, e.g., 80%) to provide advice.

1. When You Are Above Target (Safe to Skip)

If your current percentage is higher than your target, the app calculates the “buffer” of classes you can miss.

Formula:Safe to Skip = Floor( (Present / Target) - Total Classes ) Floor() is a function that rounds down to the nearest integer.

• Present: Number of classes you have attended.
• Target: Your desired minimum percentage (e.g., 0.80).
• Total Classes: Sum of Present + Absent sessions.

Example:

• You attended 18 classes out of 20 total.
• Your target is 80% (0.8).
• (18 / 0.8) - 20 = 22.5 - 20 = 2.5
• Result: You can safely skip 2 more classes. (Skipping 3 would drop you to 18/23 = 78%, which is below 80%).

2. When You Are Below Target (Need to Attend)

If your percentage is below the target, the app calculates how many consecutive classes you need to attend to recover.

Formula:Need to Attend = Ceil( (Target * Total - Present) / (1 - Target) ) Ceil() is a function that rounds up to the nearest integer.

Example:

• You attended 14 classes out of 20 total (70%).
• Your target is 80% (0.8).
• (0.8 * 20 - 14) / (1 - 0.8)
• (16 - 14) / 0.2
• 2 / 0.2 = 10
• Result: You need to attend the next 10 classes in a row to raise your average back to 80%.

Disclaimer

[!NOTE] These calculations are mathematical estimates based on the data you currently have. They do not account for:

• Future class cancellations or extra sessions.
• Specific module requirements (e.g., mandatory labs).
• Institute-specific rounding rules.

Always treat this advice as a guide and verify with your actual detailed schedule.