1.6 evaluating research

Question 1

Accuracy

Answer 1

How close a measurement is to the true value of the quantity being measured.

Question 2

Precision

Answer 2

How closely a set of measurement values agree with each other.

Question 3

Systematic errors

Answer 3

Errors that differ from the true value by a consistent amount.
- May be due to environmental factors, observational/research errors, incorrect measurement instrument calibration.

Question 4

Random errors

Answer 4

Errors that are unsystematic + occur due to change.

Question 5

Repeatability

Answer 5

When the same results are achieved when the experiment is repeated under identical conditions.

Question 6

Reproducibility

Answer 6

Experiment is repeated under different conditions but produce same results.

Question 7

Internal validity

Answer 7

Extent to which an investigation truly measures what it claims to.

Question 8

External validity

Answer 8

Extend to which an investigation can be applied to similar individuals in a different setting.