Problem: Two electric balances are tested using a standard weight. The true mass of the standard is 1.3111 g. The results of the 5 individual measurements on each balance are recorded below.   Average mass = Which statement best describes the results? a) A: poor precision, good accuracy b) B: good precision, poor accuracy c) B: good precision, good accuracy d) B: poor precision, poor accuracy e) A: good precision, good accuracy

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Two electric balances are tested using a standard weight. The true mass of the standard is 1.3111 g. The results of the 5 individual measurements on each balance are recorded below.

Average mass =

Which statement best describes the results?

a) A: poor precision, good accuracy

b) B: good precision, poor accuracy

c) B: good precision, good accuracy

d) B: poor precision, poor accuracy

e) A: good precision, good accuracy