Answer 6

The mean temperature of the readings 24.5, 27.0 and 25.0 ^oC is 25.5 ^oC and the measure of the associated error in these readings would be the 95% Confidence Level, found by multiplying the Standard Error of this mean by an appropriate t-value.

Question 7

A Voltmeter is shown below.

The reading taken from this meter is 1.49 Volts. The error in this reading is -

± 0.001 V       ± 0.002 V       ± 0.005 V

± 0.01 V       ± 0.02 V       ± 0.05 V

± 0.1 V       ± 0.2 V       ± 0.5 V