1. try something out
   Transitive, Separable
   Meaning: to test
   Example: You should try out the new restaurant on Main Street.

   Did you know that the average number of people a person dates before marriage is 24?  How many boyfriends/girlfriends did you try out before you found “the one”?

try out for something
Transitive, Inseparable
Meaning: a test to determine the qualifications of applicants, as for an athletic team or theatrical role.
Example: After much practice, he decided to try out for the high school basketball team.
She decided to try out for the role of Lady Macbeth in the school performance.