Which of the following is the best definition of independent variable?
It is the measured variable that may change depending upon manipulation of
an experimental variable.
It is any unmeasured variable not controlled within the experiment.
It is the variable that is intentionally manipulated by the researcher.
It is one of the external variables that cannot be controlled by the researc
Question 2
A researcher was interested in whether watching violence affected children's behaviors. To examine this, he showed a violent film to one group of preschoolers and a nonviolent film to a second group of preschoolers.
Following the films, the behaviors of the two groups were
compared. This study was:
a naturalistic observation.
an experiment.
a case study.
longitudinal research.
Independent assortment of chromosomes at meiosis explains Mendel’s ratio
Closed urinary drainage system. Urine being measured after it leaves patient’s body via catheter.
Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry.
The declining age of menarche over the past 150 years has been measured in many European countries,
Variable expressivity as shown in flies homozygous for the eyeless mutation in Drosophila
Light-independent reactions in C4 plants