Dria

Location : contracts/libraries/Statistics.sol

• Problem: Solidity only supports integer division, which truncates any fractional part. When calculating the mean (sum / data.length), this results in precision loss, especially noticeable in arrays where the true mean is a non-integer.

• Recommendation: If higher precision is necessary, consider scaling the sum before division or using a fixed-point library to approximate decimal precision. Otherwise, document this limitation clearly.

• Tools used: Github and VSC

• POC:

• Expected Outcome: avgResult will yield 1 instead of the true mean of 1.333, demonstrating precision loss due to truncation.

• Impact: Results in approximations rather than exact values, which might affect statistical calculations relying on high precision, particularly when working with small datasets or when calculating thresholds based on mean or variance.