To go further, your modifier from stats only increases on even numbers, so most of the time that's what you can expect a stat to be. 8,10,12,14,16,18 for example covers the expected range that every L1 player character is likely to fall in. That also let's you estimate the CR of a monster by seeing if the stats tend toward a negative modifier or a positive one.

To go further, stats have interconnections between them. The physical stats (STR DEX CON) are likely to sit within a few points of each other, same goes for mental stats (INT WIS CHA). The physical section is also likely to be higher because most of the creatures on this list were designed for combat and will have stats reflecting that. The exception is WIS, which is used to determine initiative order in combat and is usually high regardless of creature level.