Examlex
Describe a Boolean expression.
Independent Variable
A variable in an experiment that is manipulated to observe its effects on a dependent variable.
Internal Validity
The extent to which a study provides evidence that a causal relationship exists between the variables it examines, free from confounding factors.
Random Assignment
Use of a random "chance" procedure (such as a random number generator or coin toss) to determine the condition in which an individual will participate.
Confounding Variable
A factor other than the independent variable that might produce an effect in an experiment, leading to inaccurate results if not controlled.
Q17: A program in which the user makes
Q34: Programmers refer to hidden implementation details as
Q35: A _ is a webpage item listed
Q35: A mistake programmers often make with loops
Q36: Once your logic enters the body of
Q39: A(n) _ is the adjective defining the
Q41: When a large data file needs to
Q49: Consider a mail-order business in which customers
Q81: Specialized search engines, such as Technorati, Digg,
Q91: In Windows Live Mail, the Actions group