Names a quantile by its percentile, which is the number a reader can place.
Trailing zeros are trimmed rather than fixed, so the common rungs read as
"25th" and "75th" rather than "25.0th" while a deep one still reads as
"0.39th" instead of rounding to "0th" -- and rounding a deep rung to zero
would name several different rungs identically, which is exactly the part
of the distribution a letter-value plot exists to separate.
Names a quantile by its percentile, which is the number a reader can place.
Trailing zeros are trimmed rather than fixed, so the common rungs read as "25th" and "75th" rather than "25.0th" while a deep one still reads as "0.39th" instead of rounding to "0th" -- and rounding a deep rung to zero would name several different rungs identically, which is exactly the part of the distribution a letter-value plot exists to separate.