Question

Which of the following procedures tend(s) to minimize the influence of random errors on measured results?

I. Signal averaging

II. Use of internal standards

III. Averaging the results from multiple samples

(a) I only

(b) II only

(c) III only

(d) I and III only

(e) I, II, and III

​

Answer 1

Answer:

(e) is the correct option.

Answer 2

Answer: it's letter C.

Explanation:

The first 2 options will not help in reducing the random errors. That would seem to negate the measurement. Random errors appear in internal standard and as well as in the samples since they are random, they are indeterminate, so using internal standards will not help minimize errors at all. However, we could minimize the random errors in the measurement by using multiple standards and averaging the results of multiple samples using more than 1 sample. This will help to minimize the random errors and inconsistencies in the measurement. So, the correct option is letter c.