Temperature and Age Babies First Crawl 36 34 32 30 28 26 24 22 20 30 40 50 60 70 80 Average Monthly Temperature (°F) :-0.0777(temperature) + 35.7 • The line of best fit: crawling age • Correlation coefficient: -0.7 • Average crawling age: 31.77 Which statement represents a valid conclusion and justification that the researchers can make as a result of the study? A. Since the correlation coefficient is less than 0, there is insufficient evidence to conclude causation or correlation for this study. B. The average crawling age of 31.77 weeks provides evidence that warmer temperatures at the time a baby is six months old cause the baby to crawl earlier. C. The correlation coefficient of -0.7 and accompanying graph provide evidence that there is a moderately strong, negative, linear relationship between average monthly temperature and the average crawling age of babies. This correlation between the two variables implies that there is a cause-and-effect relationship between the two. D. The correlation coefficient of -0.7 and accompanying graph provide evidence that there is a moderately strong, negative, linear relationship between average monthly temperature and the average crawling age of babies. While there is a correlation between the two variables, that does not imply there is a cause-and- effect relationshin between the twO Average Crawling Age (weeks)
Temperature and Age Babies First Crawl 36 34 32 30 28 26 24 22 20 30 40 50 60 70 80 Average Monthly Temperature (°F) :-0.0777(temperature) + 35.7 • The line of best fit: crawling age • Correlation coefficient: -0.7 • Average crawling age: 31.77 Which statement represents a valid conclusion and justification that the researchers can make as a result of the study? A. Since the correlation coefficient is less than 0, there is insufficient evidence to conclude causation or correlation for this study. B. The average crawling age of 31.77 weeks provides evidence that warmer temperatures at the time a baby is six months old cause the baby to crawl earlier. C. The correlation coefficient of -0.7 and accompanying graph provide evidence that there is a moderately strong, negative, linear relationship between average monthly temperature and the average crawling age of babies. This correlation between the two variables implies that there is a cause-and-effect relationship between the two. D. The correlation coefficient of -0.7 and accompanying graph provide evidence that there is a moderately strong, negative, linear relationship between average monthly temperature and the average crawling age of babies. While there is a correlation between the two variables, that does not imply there is a cause-and- effect relationshin between the twO Average Crawling Age (weeks)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter1: Expressions And Functions
Section1.8: Interpreting Graphs Of Functions
Problem 11PPS
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To investigate whether air temperature influences the age at which a baby learns to crawl, researchers conducted a
study of 414 babies. The graph and accompanying statistics provide information about the average monthly
temperature, in degrees Fahrenheit (F), when a baby was six months old and the average age, in weeks, when the
baby first started to crawl.
Temperature and Age Babies First Crawl
36
34
32
30
28
24
22
20
30
40
50
60
70
80
Average Monthly Temperature (OF)
• The line of best fit: crawling age =-0.0777(temperature) + 35.7
• Correlation coefficient: –0.7
• Average crawling age: 31.77
Which statement represents a valid conclusion and justification that the researchers can make as a result of the study?
A. Since the correlation coefficient is less than 0, there is insufficient evidence to conclude causation or
correlation for this study.
B. The average crawling age of 31.77 weeks provides evidence that warmer temperatures at the time a baby
is six months old cause the baby to crawl earlier.
C. The correlation coefficient of -0.7 and accompanying graph provide evidence that there is a moderately
strong, negative, linear relationship between average monthly temperature and the average crawling age of
babies. This correlation between the two variables implies that there is a cause-and-effect relationship
between the two.
D. The correlation coefficient of -0.7 and accompanying graph provide evidence that there is a moderately
strong, negative, linear relationship between average monthly temperature and the average crawling age of
babies. While there is a correlation between the two variables, that does not imply there is a cause-and-
effect relationship between the two.
Average Crawling Age (weeks)
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