Which of the following is the most common relationship of screen duration to story duration: summary relationship, real time, or stretch...

Here are
the definitions of the three terms, taken word-for-word from Looking at Movies: An
Introduction to Film (W.W. Norton & Co, 2006;
http://www.wwnorton.com/college/film/movies2/glossary.aspx).

real time: The actual time during which something takes place. In real time, screen
duration and plot duration are exactly the same. Many directors use real time within films to
create uninterrupted "reality" on the screen, but they rarely use it for entire films.
Compare cinematic time, stretch relationship, and summary relationship.

stretch relationship: A time relationship in which screen duration is longer than plot
duration. Compare real time and summary relationship.

summary relationship: A
time relationship in which screen duration is shorter than plot duration. Compare real time and
stretch relationship.

Alongside those definitions, this
source identifies a fourth...