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.
A cross of sweet peas showing that independent assortment does not always occur
Variable expressivity
The Punnett square of a dihybrid cross demonstrates Mendel’s law of independent assortment.
A typical variable cam timing control valve. The solenoid is controlled by the engine computer and ...
Generation of diversity by variable V-J joining mechanisms
Separation of variable number tandem repeat (VNTR) alleles after PCR amplification