The example covers numbers 13 to 24 (the second dozen). (7) Dozens (12 Numbers): 2-1 payout (pays your original bet PLUS 2 units). (6) Colours (18 numbers): 1:1 payout (pays your original bet PLUS 1 unit). (5) Six Line (6 numbers): 5-1 payout (pays your original bet PLUS 5 units). (4) Square (4 numbers): 8-1 payout (pays your original bet PLUS 8 units). (3) Street (3 numbers): 11-1 payout (pays your original bet PLUS 11 units). (2) Split (2 numbers): 17-1 payout (pays your original bet PLUS 17 units). (1) Straight (1 number): 35-1 payout (pays your original bet PLUS 35 units). Although some bets have better odds, one bet is not more profitable than another.
Different types of bets have different odds, but the house edge is on the same on every bet.