Types of Validity 1. Face Validity ascertains that the measure appears to be assessing the intended construct under study. The stakeholders can easily assess face validity. Although this is not a very âscientificâ type of validity, it may be an essential component in enlisting motivation of stakeholders.
Learner's definition of GLEAN. 1. [+ object] a : to gather or collect (something) in a gradual way. She gleaned her data from various studies. He has a collection of antique tools gleaned from flea markets and garage sales. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples. b : to search (something) carefully. They spent days gleaning the files for information.
In mathematics, the gradient is a multi-variable generalization of the derivative. While a derivative can be defined on functions of a single variable, for functions of several variables, the gradient takes its place. The gradient is a vector-valued function, as opposed to a derivative, which is scalar-valued.