What is a direct comparison measurement What are some of the

What is a direct comparison measurement? What are some of the limitations of direct comparison? We typically are interested in the statistics of a _____, which we try to ascertain from measurements of _____.

Solution

3) In the direct comparison method of measurement, we compare the quantity directly with the primary or secondary standard. That means, the value of a quantity is obtained directly.

Example: If we want to measure the length of the bar, then we measure it by directly comparing with measuring tape. Here Measuring tape is the standard. It is called direct comparision of measurement.

Limitation: 1) Not accurate because it depend on human insensitiveness

2) sometimes, Standard is not accurate due to wear & tear.