ANALYZING THIS SAME EXPERIMENT USING FROGS -- THE ANSWERS

 

27.   After the experiment is completed, our results should also show some range in variation.  (These

        results also vary and are a SECOND variable.)  These results (or effects) are known as the 
        __ DEPENDENT __ variable.   

 

28.   In a study of how temperature affects any of a number of different activity rates in frogs, the
       different dependent variables could be S P E E D,  B R E A T H I N G   RATE, food 
       I N T A K E    R A T E,   S W I  M M I N G   RATE,  or  H E A R T    R A T E  or many
       others.

NOTE  --  The experimenter has no control over the values for these variables, but merely which type of factor to study.  

 

29.   This dependent variable also often varies through some range of data.  The resulting activity
        rate of frogs (see prior question) may be at a range of  H O P S per minute,  B R E A T H S
        per minute,  grams of F O O D  consumed per day,  D I S T A N C E  swam per minute  or

        H E A R T  beats per minute.  

 

30.   The above changes in activity rates are several of the  E F F E C T S  triggered by the original
         change in temperature.  

 

31.   The dependent variable is usually positioned along the  __  Y __ axis.