prac res summative
24 flashcards · Other · by Yan Cu
sometimes called an experimental or predictor variable
independent
other names for independent variable
experimental predictor outcome
is a variable that is dependent on an independent variable(s)
dependent
the “cause”
Independent variables
act as the “effect”
Dependent variable
are those that affect the dependent variable but are not controlled adequately by the researcher
Extraneous variables
are those that vary systematically with the independent variable and exert influence on the dependent variable
Confounding variables
are measured on a scale that theoretically can take on an infinite number of values
Continuous variables
are measured and assigned to groups on the basis of specific characteristics
Categorical variables
can be converted to categorical variables
Continuous variables
cannot be converted to continuous variables
categorical variables
are also known as discrete or qualitative variables
Categorical variables
have 2 or more categories but do not have intrinsic[basic] order
Nominal variables
are nominal variables that have 2 categories or levels
Dichotomous variables
that have 2 or more categories, can be ordered or ranked
Ordinal variables
are also known as quantitative variables
Continuous variables
can be further categorized as either interval or ratio
Continuous variables
can be measured along a continuum and they have a numerical value
Interval variables
examples of interval variable
the temperature measured in degrees Celsius or Fahrenheit
example of ordinal variables
Yes, a lot [most positive], They are OK [middle response], Not very much [least positive]
example of dichotomous variables
o Gender [male or female] o Mobile phone ownership as either ‘yes” or “no” o Real estate: type of property classified as residential or commercial
example of nominal variables
o Types of property [houses, condos, co-ops, bungalows] o People who live in the USA by state
are interval variables, but with the added condition that 0[zero] of the measurement indicates that there is none of that variable
Ratio variables
examples of ratio variables
height mass distance