Prediction intervals tell you where you can expect to see the next data point sampled. … Prediction intervals must account for both the uncertainty in estimating the population mean, plus the random variation of the individual values. So a prediction interval is always wider than a confidence interval. How doRead More →
Likert scales are either ordinal or interval, and many psychometricians would argue that they are interval scales because, when well constructed, there is equal distance between each value. Is a 1/5 scale ordinal or interval? In dealing with Likert “scales” you have to distinguish between the way that individual itemsRead More →
Likert scale, Net Promoter Score, Semantic Differential Scale, Bipolar Matrix Table, etc. are the most-used interval scale examples. What is semantic differential scale in education? A semantic differential scale is a type of rating scale that weighs respondents’ perceptions of or attitudes towards a specific subject matter through an arrayRead More →