What is \"reliability\" in a study? Please select all that apply.Select one or more:
a. Degree to which different test givers or interviewers ratethe same person or test the same way given proper training
b. Degree to which questions in a survey agree with one anotherwhen measuring the same attribute or variable
c. Can only be evaluated if a \"Gold Standard\" exists
d. Ability of the test to get the true value
e. Also known as accuracy
f. Ability of a test to get the same result over and overagain