Seen on a price board, "betting odds explanation" comes down to two numbers. Betting odds are a price and a forecast in one number. A short explanation covers most of it: the odds say how much a winning stake returns, and they hint at how likely the book thinks the outcome is. What does not show on the surface is the margin, which is why reading odds well means looking past the payout to the chance behind the price.
A betting odds table lays these prices side by side: formats in columns, implied chance in the last one. Reading such a table is quick practice. Evens sits at a fifty per cent chance, odds of 1.50 at about sixty seven, odds of 4.00 at twenty five, and odds of 11.00 near nine. Seeing the column of chances next to the prices makes it plain how fast the chance falls as the payout gets larger.
Which betting odds are good depends on the gap between the price and the true chance, and the size of the number alone says little. Long odds on a pick that rarely wins are poor value, and short odds on a near certainty can be fair. A good price is one where the implied chance sits below the real one. Since no bettor knows the real chance exactly, most prices offered carry the margin and pay slightly less than fair.
Short odds point to a likely outcome and a small return, while long odds point to an unlikely one and a large return.
Only when the real chance of the outcome is higher than the chance the price implies; the size of the number alone says little.
A race has many runners, so each carries a long price, and the chances across the whole field add up well past one hundred per cent.
A match can end in a home win, a draw or an away win, and the draw takes its own share of the probability.