answers

Exercise 1

The correlation is -0.34, which means that the correlation is moderate and doing exercises may have had an effect on the grade. If this is the case and the correlation is negative, the more tasks Lisa-Peter did the worse the grade she received.

Exercise 2

There is a strong correlation between A and B and they affect on each other. The correlation coefficient is approximately 0,8

Exercise 3

There is a negative correlation between age and happiness of -0,38, i.e. as age increases happiness seems to decrease.

Exercise 4

Answer: Negative dependence. The correlation coefficient is close to -1 because “no deviations”

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