A survey that asks the respondent to indicate their level of education and includes response categories of some high school high school and university violated which important rule for constructing close-ended items for naires ?

A survey that asks the respondent to indicate their level of education and includes response categories of some high school high school and university violated which important rule for constructing close-ended items for naires ?

A. exhaustive
B. mutually exclusive
C. comprehensive
D. tangible
E. relevant

Which of the following was not identified as one of the four conditions that must be met before a researcher can say that an independent variable or variables caused the change in the dependent variable ?

Which of the following was not identified as one of the four conditions that must be met before a researcher can say that an independent variable or variables caused the change in the dependent variable ?

A. internal consistency
B. correlation
C. theory
D. time order
E. elimination of spuriousness