relationship between reliability and validity

Longitudinal relationship between the development of body fat mass in adolescent males and females and their eating and activity pattern. For example, when a man truly reports his. Reliability (or consistency) refers to the stability of a measurement scale, i.e. The reliability of a test limits the size of the correlation between the test and other measures. If a test truthfully measures what it purports to measure is both valid and reliable.

edu it is current (check date) it refers to data and statistics from valid first-hand investigationsĪ sources accuracy is increased if it can be substantiated in multiple sources. Lecture 13 - Reliability, Validity, and Objectivity (1). Convergent and divergent validity could be established by showing the test correlates relatively highly with other measures of spatial ability but less highly with tests of verbal ability or social intelligence.

The reliability is increased if the information is not biased it has been written by a qualified person it is on a reputable site, i.e.gov. Question 15 1.25 out of 1.25 points When discussing the relationship between reliability and validity, which of the following is true Selected Answer: Low reliability always indicates low degree of validity. Validity of evidence is increased if they have been gathered using appropriate methods they relate to the hypothesis or problem Precision is a measure of how close you measurements are. Reliability is increased if the experiment is repeated multiple times and you get the same result.Īccuracy refers to if you averaged all your measurements, how close would you be to the true value. There are no uncontrolled variables affecting your experiment.

For example, in our table example if you wanted to know the height of your table, you would measure your table not one of the same model to approximate your table’s height. It also requires that it is a fair measuring procedure i.e you are measuring the table you intend to measure. For example if you are measuring a bench height – making sure the length you read is representative of the height of the bench, the ruler is not skewed, no parallax error etc. The validity of an experiment is increased if the experiment measurements are close to the true measurements.

Relationship between reliability and validity