A study conducted at the University of Denver investigated whether babies take longer to learn to crawl in cold months, when they are often bundled in clothes that restrict their movement, than in warmer months. Infants born during the study year were split into twelve groups, one for each birth month. We consider the average crawling age of babies in each group against the average temperature when the babies are six months old (that's when babies often begin trying to crawl). Temperature is measured in degrees Fahrenheit and age is measured in weeks. 34 Avg. crawling age (weeks) 33- 32- 31 30- 29- 30 ● 40 50 Temperature (F) a) Describe the relationship between temperature and crawling age. Choose all answers that apply. There is a somewhat moderate, negative, linear relationship between temperature and crawling age There is a moderate, positive, linear relationship between the temperature and crawling age There is strong, negative, linear relationship between termperature and crawling age The point at the bottom should be taken under consideration 60 Submit All Parts b) How would the relationship change if temperature was measured in degrees Celsius and age was measured in months? O The correlation coefficient between the two variables would be larger O The correlation coefficient between the two variables would be smaller 70 Changing the units will not change the form, direction or strength of the relationship between the two variables c) The correlation between temperature in degrees F and age in weeks was r = the temperature to degrees C and age to months, what would the correlation be? -0.728 0.717. If we converted
A study conducted at the University of Denver investigated whether babies take longer to learn to crawl in cold months, when they are often bundled in clothes that restrict their movement, than in warmer months. Infants born during the study year were split into twelve groups, one for each birth month. We consider the average crawling age of babies in each group against the average temperature when the babies are six months old (that's when babies often begin trying to crawl). Temperature is measured in degrees Fahrenheit and age is measured in weeks. 34 Avg. crawling age (weeks) 33- 32- 31 30- 29- 30 ● 40 50 Temperature (F) a) Describe the relationship between temperature and crawling age. Choose all answers that apply. There is a somewhat moderate, negative, linear relationship between temperature and crawling age There is a moderate, positive, linear relationship between the temperature and crawling age There is strong, negative, linear relationship between termperature and crawling age The point at the bottom should be taken under consideration 60 Submit All Parts b) How would the relationship change if temperature was measured in degrees Celsius and age was measured in months? O The correlation coefficient between the two variables would be larger O The correlation coefficient between the two variables would be smaller 70 Changing the units will not change the form, direction or strength of the relationship between the two variables c) The correlation between temperature in degrees F and age in weeks was r = the temperature to degrees C and age to months, what would the correlation be? -0.728 0.717. If we converted
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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