(a) Below are three scatterplots. Indicate whether the correlation is closest to
ID: 2922581 • Letter: #
Question
(a) Below are three scatterplots. Indicate whether the correlation is closest to -1.0, -0.7 -0.2, +0.2, +0.7 or +1.0 for each scatterplot. First Plot Second Plot Third Plot Answer(s): (b) A study finds an association between the "number of new houses build" and "average weekly earnings" (AWE). Should you conclude that AWE causes new houses? Or can you explain the association between AWE and new houses in some other way? Answer: (c) A positive correlation between "inflation" and "employment" is observed. Does this indicate a causal connection or can it be explained in some other way? Answer: (d) A survey in 1960 showed a correlation of r=-0.3 between "age" and "educational level for persons aged over 25". How can you explain the negative correlation? Answer:Explanation / Answer
5.1 (a)
First plot: It indicates negative correlation and it is close to -0.7
Secon plot: It indicates perfect positive correlation and it is close to +1
Third plot: It indicates low positive correlation and it is close to +0.2
(b) Yes AWE causes new houses. Here both the variables are correlated
(c) Here both the variables are positively correlated, it means that both are deviated in the same direction.
(d) Here there is an inverse relationship between Age and Educationlevel'. It means that both are deviated in the opposite directions
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