A psychologist at a private mental health facility was asked to determine whether there was a clear difference in the length of stay for patients with different categories of diagnosis. Looking at the last seven patients in each of the three major categories, the results (in terms of weeks of stay) were as follows. Using the data below, test whether the length of stay for patients vary based on category of diagnosis.

Diagnosis Category
Affective Disorders	Cognitive Disorders	Drug-related Conditions
7	12	8
6	8	10
5	9	12
6	11	10
9	11	9
5	10	11
6	9	12

1. What is the IV? Is it within or between-subjects? How many levels? What is the DV?

Create the appropriate graph in SPSS.