Working with researchpresentations lends itself to a variety of symbols, and presentations being what they are lend themselves to being consistent. For years I have received the letter “N” or “n” to represent the number of participants in a study and we have always made them all lower or upper-case for consistency, however there is a difference. The “N” (upper-case) represents the total population of the study while the “n” (lower-case) represents the sub segment.
For example, a study with 5,000 participants found that 3,149 participants own at least one cat, while 3,218 participants own at least one dog would be represented this way.
Does Anyone know the difference between "P" and "p"?