The major difference between an interval and a ratio scale is that October 4, 2022 by 8i9x6 with an interval scale you know which values represent more of the quantity. with an interval scale you can speak meaningfully about a score of 0. with a ratio scale you can speak meaningfully about a score of 0. both scales carry the same level of information See Answer with a ratio scale you can speak meaningfully about a score of 0.