why is the interval scale negative how to use normalization method for ratings when do we normalize ratings what is the normalization method for ratings what is the normalization formula for performance ratings? how to use a normalization scale what does zero mean on a ratio scale what is normalization method normalize a ratings measurement which scale is used to normalize ratings what is normalization for ratings which is better to use the interval or interval standard what does the interval scale mean? what is the normalization in an interval scale can the interval range be negative? what is the standard deviation for a normalized interval scale what is a normalization for a ratio scale what is the normalization method for data what is normalized value in rating scale what is the difference between a interval scale and a normalized scale?