Both are precise, but in different contexts.
An ounce is a smaller measure so 6 oz has a greater absolute precision. On the other hand, 320 is accurate to 2 significant figures so 320 lbs has greater relative precision.
What determines how precise a measurement is
It is precise if it is repeatable.
Is as exact as possible
tenth of a gram
The precise measurement is 5.7 mm for the first value and 3.6 m for the second value.
What determines how precise a measurement is
It is precise if it is repeatable.
The measurement 25.81 is precise to the nearest hundredth.
320lb = 145.1kg
145.5kg = 320lb 12.4oz
No. Accurate relates to how close the actual measurement the instrument measures. Precise relates to how much detail the instrument gives when measuring. They are independent to each other: An measurement can be precise and accurate (eg the value of π is 3.141592654) An measurement can be precise and inaccurate (eg the value of π is 1.733677432) An measurement can be less precise and accurate (eg the value of π is 3.14) An measurement can be less precise and inaccurate (eg the value of π is 1.73).
measuring tape
An automatically measurement has a higher precision than a manually measurement.
19.2cm is more precise
The precision of a measurement can be determined by looking at the number of decimal places in the measurement. The more decimal places, the more precise the measurement. Additionally, if a measuring tool is capable of measuring smaller increments, it can provide a more precise measurement.
Is as exact as possible
tenth of a gram