psych stat w/o

are observations of physical, attitudinal, and  ​

               behavioral characteristics that can take on ​

               different values. (Ex. motivation, self-esteem, ​

               and attitudes.)​

can take on only specific values no other values ​

               can exist between these numbers(Ex. whole numbers)​

​

can take on a full range of values (e.g., ​

               numbers out to several decimal places); an infinite number ​

               of potential values exists. (Ex. complete a task in 12.839

are used for observations that have categories, ​

                                  or names, as their values.​

are observations that have rankings as values.​

                                 (Ex. 1st, 2nd, 3rd, . . . )​

are used for observations that have numbers as​

                                values; the distance (or interval) between pairs of ​

                                 consecutive numbers is assumed to be equal. ​

are variables that are considered in the frequency​

                                  of an event’s occurrence.​

The variable that the scientist changes during their experiment are the independent variable. ​

is the one which we can test in a scientific experiment, in order to get its values. ​

is one which the scientist holds constant (controls) during an experiment. ​