PROBLEMS
1. A 100 ohm resistor supplied by a manufacturer read as 101.5 ohms by Digital Ohmmeter.
Determine the following:
a) relative error b) percentage error
2. Find the mean and the standard deviation of the following set of weight measurements:
1.6 1.8 1.2 1.26 1.26 1.3 1.3 1.3 1.33 1.35
1.4 1.4 1.4 1.4 1.4 1.43 1.48 1.53 1.5 1.5
1.53 1.6 1.6 1.62 1.65 1.74 1.79 1.7 1.81
3. Calculate the standard error of the mean for the sample in Problem 2, and report it in the
standard manner.
4. A DVM has to read count ranging from 0 to 9999. If the full scale reading is 9.999 volts,
what is the resolution of the instrument?
5. Ten measurement's of a metal film resistor readings are 101.1, 101.2, 101.3, 101, 101.4,
101.5, 101.2, 101.0, 101.3, 101.0. Calculate the following, assuming the standard errors
are present.
(i) mean (ii) S.D. and (iii), probability error