Which term describes the certainty or reliability of data collected during an investigation?

Which term describes the certainty or reliability of data collected during an investigation?

• A. Valid
• B. Accurate
• C. Reliable
• D. Questionable

Answer: (A)

The main idea here is how trustworthy the data are in reflecting what the investigation is trying to answer. Validity describes that trustworthiness: data are appropriate for the question and collected in a way that truly measures the intended phenomenon. When data are valid, you can interpret them as evidence about the question because the measurement tools and procedures actually target the right thing and aren’t distorted by design flaws. This is why validity is the best fit for describing the certainty behind the data. It’s useful to separate this from accuracy and reliability. Accuracy is about how close measurements are to a true value, and reliability is about getting consistent results across trials. Validity, in contrast, is about whether the data and methods are appropriate for the question itself, which underpins whether the conclusions drawn from the data are meaningful.

The main idea here is how trustworthy the data are in reflecting what the investigation is trying to answer. Validity describes that trustworthiness: data are appropriate for the question and collected in a way that truly measures the intended phenomenon. When data are valid, you can interpret them as evidence about the question because the measurement tools and procedures actually target the right thing and aren’t distorted by design flaws. This is why validity is the best fit for describing the certainty behind the data.

It’s useful to separate this from accuracy and reliability. Accuracy is about how close measurements are to a true value, and reliability is about getting consistent results across trials. Validity, in contrast, is about whether the data and methods are appropriate for the question itself, which underpins whether the conclusions drawn from the data are meaningful.