Question

Consider the following statements about tests and test results:

i. A test μst be observable to be useful.

ii. A test may be material but not relevant.

iii. A test may be relevant but not economic.

Which of the above statements are true?

a) ii only

b) i and iii only

c) ii and iii only

d) i, ii, and iii

Answer 1

All three statements about tests in a scientific context are true; a test must be observable, may be not relevant even if material, and may be relevant but not economic.

Step-by-step explanation:

The question posed is about the characteristics of tests and their results in a scientific context. When analyzing the statements given:

• A test must be observable to be useful: This is true because in science, empirical evidence that can be observed and measured is key for validating conclusions.
• A test may be material but not relevant: This is true because the material aspects of a test, such as the data it produces, may not always be relevant to the hypothesis or questions being investigated.
• A test may be relevant but not economic: This is also true as some tests, while relevant, may not be economic in terms of resources, time, or money.

Therefore, the correct answer to the question of which statements are true is (d) i, ii, and iii.