Question

Write the characteristics of a good measuring tool.

Answer 1

A good measuring instruments posses' three qualities, which include: validity, reliability and usability. Validity – the extent to measure what it intends to measure. It has four types; the content, construct, concurrent and predictive. ... A test to be effective must be valid.

Answer 2

Characteristics of good measuring instrument tool are as follows:

• Reliability

• Consistency

• Validity

• Usability

Explanation:

• Reliability is an extensive measures for keeping a good measuring instrument, it is the correctness or the extent to which the instrument determines the same object as it is used on the same subjects every time under the same circumstances.

• The next measure is consistency that determines what is supposed to be measured in a study.

• Validity indicates the amount of test serves and its purpose.

• Usability is defined as the without spending more money by using the existing.

• It is important that a test is reliable for the correct implementation and analysis of the tests.

• The instrument should be comfortable, functional and accessible.

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