For each piece being measured you have to have ______ measurements.

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Multiple Choice

For each piece being measured you have to have ______ measurements.

Explanation:
Ensuring measurement reliability requires repeating readings. For each piece being measured you should have two measurements to confirm accuracy and catch random errors. A single measurement can be swayed by small setup issues, parallax, or user reading mistakes. A second measurement gives a check: if the two readings agree within the acceptable tolerance, you can accept the result (and often average them for greater precision). If they don’t align, you recheck the instrument and the technique and re-measure. While sometimes more measurements are used in higher-precision work, this item emphasizes the minimum of two measurements to ensure data quality.

Ensuring measurement reliability requires repeating readings. For each piece being measured you should have two measurements to confirm accuracy and catch random errors. A single measurement can be swayed by small setup issues, parallax, or user reading mistakes. A second measurement gives a check: if the two readings agree within the acceptable tolerance, you can accept the result (and often average them for greater precision). If they don’t align, you recheck the instrument and the technique and re-measure. While sometimes more measurements are used in higher-precision work, this item emphasizes the minimum of two measurements to ensure data quality.

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