which test for 4level categorical IV and continious IV?

#1
I have a 4 category IV.
What's your family type? Authoritarian, democratic, undefinable, inconsistent.
My DV is a score on scale. Continious type obviously.

Which test to use? My hypothesis is that participants who respond as authoritarian will have the highest DV scores.
 
#2
I have a 4 category IV.
What's your family type? Authoritarian, democratic, undefinable, inconsistent.
My DV is a score on scale. Continious type obviously.

Which test to use? My hypothesis is that participants who respond as authoritarian will have the highest DV scores.
Can you provide more information on the dependent variable? How is it generated? Do people answer a questionnaire 1-5 (low-high), for example?
 
#3
Yes. The DV is the result of an addition of a 20 question 9 point likert scale. I'll add all the points from the 20 quetions and come up with a score. 0+2+5+2+8+2+5+.. etc: 65. For example.
Does this help? And why does it matter how the DV is generated?
Edit:thanks :)
 
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