Saturday, December 17, 2011

What is the independent variable, dependent variable and control group for these experiments?

Experiment 1


Females fed diets high in cholesterol produced more


eggs than those fed diets which contained low levels of


cholesterol.


Experiment 2


When cocklebur seeds were subjected to the heat


shock treatment, they germinated in 3 days. It took other seeds,


not subjected to this treatment, 45 days to germinate.


Experiment 3


Male canaries can be trained to imitate melodies


they hear. Female canaries were more likely to mate with males that


imitated heavy metal music than those who had not heard any music


at all.|||1.


independent: cholesterol level in diets


dependent: egg production


control: those who were fed a regular cholesterol diet





2.


independent= treatment vs no treatment


dependent= germination time


control = no treatment





3.


independent= music melodies


dependent= attractiveness to females


control= ones where no melodies were taught

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