A test developer computes the item-discrimination index for the items on a test administered to 1,000 examinees, defining the upper and lower ranges as the top and bottom quartiles
If 200 students in the upper range got an item item right, and 100 in the lower range got it right, the item discrimination index or d for this item is a) 0.4.
b) 0.1.
c) 0.2.
d) 0.8.
a
You might also like to view...
Why was Kinsey's report controversial?
A. He reported that an overwhelming number of sex offenders were raised by lesbian parents. B. He reported that an overwhelming number of sex offenders were raised by gay parents. C. He reported that 37 percent of all males had had at least one homosexual experience to orgasm in adulthood. D. He reported that most women had unresolved issues dealing with "penis envy" even as grown adults.
In his book "The New Male Sexuality," Bernie Zilbergeld suggests that
A. there are many enjoyable forms of sexual behavior that do not require an erection. B. men should express only those feelings that are consistent with the male role, especially in bed. C. men should focus on real sex that involves a penile-vaginal intercourse. D. men should always be ready to have sex.
What are the various steps in deciding to be out socially?
What will be an ideal response?
The first and the most basic of status characteristics that we want to know about a baby after it is born is its
A. race. B. social class. C. gender. D. religion.