Question

Question 24 2 pts Arnold calculates a Pearson correlation and obtains a value of -1.07. By definition, this implies he has made a mistake in his calculations there is a negative and strong relationship between the two variables the distribution of scores for the variables are negatively skewed he will not reject the null hypothesis Question 25 2 pts For which of these research situations would you most likely calculate a Pearson correlation? X variable = political affiliation; Y variable college major X variable - city of residence: Y variable - miles driven per week © X variable number of cars owned: Yvariable = money spent on gasoline X variable = gender: Yvariable salary

Answer 1

18)
.We create a scatter plot mainly to see if the relationship is positive or negative

19)
value,strength
the correlation coefficient values lies in -1 to 1 and the magnitude indicates strength of dependence between two variable and the sign indicates whether that relation is positive or negative

24)
He made a mistake in his calculations
As the value of correlation coefficient is always between -1 and 1

25)
X=number of cars and Y= money spent on gasoline
As both are quantitative variables.