객관식
If two different variables are not related at all, they probably have a correlation coefficient of which of the following values?
126
views
11. Correlation
Correlation Coefficient
객관식
Which of the following best describes what it means for two variables to be positively associated?
A
Both variables always have the same value.
B
There is no consistent relationship between the two variables.
C
As one variable increases, the other variable tends to increase as well.
D
As one variable increases, the other variable tends to decrease.
검증된 단계별 안내1
Understand the concept of association between two variables: it describes how the values of one variable relate to the values of another variable.
Recognize that a positive association means that when one variable increases, the other variable tends to increase as well, indicating a direct relationship.
Note that 'both variables always have the same value' is too strict and not required for positive association; variables can increase together without being equal.
Identify that 'no consistent relationship' means there is no association, so it does not describe a positive association.
Understand that 'as one variable increases, the other tends to decrease' describes a negative association, which is the opposite of a positive association.
관련 영상
관련 실천
