Give an example of two variables that have a positive linear correlation. Give a
ID: 3260956 • Letter: G
Question
Give an example of two variables that have a positive linear correlation. Give an example of two variables that have a negative linear correlation. Give an example of two variables that have no correlation.
Height and Weight: The height (in inches) and weights (in pounds) of eleven football players are shown in this table.
Height, x
62
63
66
68
70
72
73
74
74
75
75
Weight, y
195
190
250
220
250
255
260
275
280
295
300
x = 65 inches
x = 69 inches
x = 71 inches
Height, x
62
63
66
68
70
72
73
74
74
75
75
Weight, y
195
190
250
220
250
255
260
275
280
295
300
Explanation / Answer
There are three types of correlation
1.Positive correlation:A positive correlation is a relationship between two variables where if one variable increases, the other one also increases. A positive correlation also exists in one decreases and the other also decreases.
Common Examples of Positive Correlations
2.Negative correlation: when one variable decreases, the other increases. The vice versa is a negative correlation too, in which one variable increases and the other decreases. These correlations are studied in statistics as a means of determining the relationship between two variables.
Common Examples of Negative Correlation
3). Zero correlation:
Zero correlation is expressed when two random variables have a zero affect on the other.
Examples of Zero Correlation: The more weight you gain, the smarter you will be. (Intelligence is not affected by weight).
Zero correlation is expressed when two random variables have a zero affect on the other.
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