Refer to the figure below.
The data in the figure show the test scores of students who took the same intelligence test on two separate occasions. Students' first scores are shown on the left and their second scores are shown on the right. Based on the data, it is reasonable to conclude that the test
A) lacks inter-observer reliability.
B) has very high cross-test reliability.
C) lacks test-retest reliability.
D) has very high convergent validity.

Question

Refer to the figure below.
 The data in the figure show the test scores of students who took the same intelligence test on two separate occasions. Students' first scores are shown on the left and their second scores are shown on the right. Based on the data, it is reasonable to conclude that the test
A) lacks inter-observer reliability. 
B) has very high cross-test reliability. 
C) lacks test-retest reliability. 
D) has very high convergent validity.

Quizplus · Accepted Answer

The data shows that many students had a significant change in score from the first test to the second, indicating a lack of test-retest reliability.

Refer to the Figure Below