Created by StemPy LabA teacher tells the class to take ten readings instead of three and to use their mean. Which error does this make smaller?
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← The figure shows a screw gauge (least count 0.01 mm) with its two faces touching. The datum line is at division 4 of the circular scale, and the scale's zero is **below** the datum line. The same gauge then reads 2.86 mm on a wire. What is the real diameter of the wire?The true length of a rod is 2.80 m. Instrument A gives 2.50 m, 2.51 m and 2.50 m. Instrument B gives 2.7 m, 2.9 m and 2.8 m. Which statement is right? →
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