Lailah measures the height of six- and seven-year-olds. To her surprise, she finds no correlation between height and age. Which of the following is most likely a reason for this result?
A. The variability in the sample does not allow an accurate calculation of the correlation coefficient.
B. The range of the variables has been restricted.
C. Correlational methods cannot be used to calculate age and height.
D. A curvilinear relationship exists between the variables.
Answer: B
You might also like to view...
In Freud's theory, what happens to libido as a child grows older?
a. It moves from the conscious mind to the unconscious mind. b. It moves from the id to the ego, and then to the superego. c. It flows from one body part to another d. It gradually fades away.
Which of the following would come closest to recruiting a random sample of college students?
a. drawing 50 telephone numbers from a hat containing the phone numbers of all students b. advertising for 50 volunteers with posters in the dining halls c. asking 50 people in the library on Saturday morning to participate d. calling the first 50 names from an alphabetical list of all students
What is the difference between instrumental, hostile, and relational aggression? Also, who are most likely to be victimized by such bullies?
What will be an ideal response?
In operant conditioning, the process of delivering reinforcement for successive approximations to a desired behavior is referred to as:
a. shaping b. partial reinforcement c. modeling d. classical conditioning