Question

1). Decide whether there is a positive correlation, negative correlation, or no correlation in the following pairs of variables: A) Amount of alcohol consumed and speed of reaction to a suddenly appearing stimulus. B) Height and intelligence. C) Number of calories consumed and weight. D) How much pain a person is in and happiness. E) The rating of physical attractiveness of husbands compared to the rating of physical attractiveness of their respective wives. F) IQ scores and the number of trials to learn a list of nonsense syllables for students in a general psychology class. G) Sales of McDonald's hamburgers per day in a city and the number of people committed per day to a state mental institution. H) Amount of time spent in practice and the average golf score. I) Number of siblings and the likelihood of developing lung cancer. J) Length of depression and the probability of suicide. K) Age and number of boyfriends/girlfriends a person has had.

Answer 1

Solution:

Find the correlation between given variables

class correlation → There is no relation in Sales Of McDonald's and H] Amount of time spent in practice and average golf of trials to learn a list FJ 19 scores and the number Of nonsense syllabus for Student in a general psychology As Ig increases number of trials to leom Syllabus decreases so , negative G] sales of McDonald's hamburgers per day in a city and the number of people committed per day to a state mental instution. DO. Of people committed to SO, NO correlation - a stare mental instution, Score. the average golf score cancer. As practice time increases the average also increases So, positive correlation. I] Number of siblings and the and the likelihood of developing lung * There is no relation as number of siblings increase and developing lung cancer. so No correlation. JJ Length of depression and the probability of suicide. As the length of depression increases then probability of Suicide also increases So, positive correlation. the

k] Age and number of boyfriends, girlfriends a person has had. increases the number of girlfriends a person has had also increases So, positive coorelation As age boyfriends/