Why do we need to measure all animals?

Why do we need to measure all animals?

• A. So we do not bias the mean.
• B. To maximize data collection costs.
• C. To increase the chance of environmental noise.
• D. To identify the worst animals only.

Answer: (A)

Measuring all animals provides a complete census of the population, so the average you calculate truly reflects the population mean without distortions from sampling. When you only measure a subset, the chosen group might not represent the whole population, causing bias in the mean and other statistics. Having data for every individual removes this sampling bias and yields the most accurate picture of the population, which is essential for making fair, informed decisions in selection and management. The other ideas miss the point: aiming to raise costs isn’t helpful; environmental noise isn’t something measuring all individuals inherently increases; and focusing on the worst animals ignores the value of understanding the full distribution for proper assessment.

Measuring all animals provides a complete census of the population, so the average you calculate truly reflects the population mean without distortions from sampling. When you only measure a subset, the chosen group might not represent the whole population, causing bias in the mean and other statistics. Having data for every individual removes this sampling bias and yields the most accurate picture of the population, which is essential for making fair, informed decisions in selection and management. The other ideas miss the point: aiming to raise costs isn’t helpful; environmental noise isn’t something measuring all individuals inherently increases; and focusing on the worst animals ignores the value of understanding the full distribution for proper assessment.