.................. indicates the proportion of the examinees that marked the item correctly.
The value of the discrimination index can range from
A list identifying each student, family, (or) elector in the study population is called
The width of the interval is calculated by ............. in a systematic sample.
In ............... sampling, we have no guarantee that each elemetn has some chance of being included in the study
Characteristics of the population µ (the population mean) σ (population SD) and σ2 (the population variance) are referred to as