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2. Is crawling seasonal? (2.2, 2.3) At what age do
babies learn to crawl? Does it take longer to learn
in the winter, when babies are often bundled in
clothes that restrict movement? There might even
be an association between babies' crawling age and
the average temperature during the month when
they first try to crawl (around 6 months after birth).
Data were collected from parents who reported
the birth month and the age at which their child
was first able to creep or crawl a distance of 4 feet
within 1 minute. Information was obtained on 414
infants, 208 boys and 206 girls. Average crawling
age is given in weeks, and the average temperature
(in degrees Fahrenheit) is for the month that is 6
months after the birth month.85
(a) Identify the explanatory and response variables.
Explain your reasoning.
(b) Make a scatterplot to display the relationship
between average 6-month temperature and average
crawling age.
(c) Describe the relationship shown in the scatterplot.
(d) Give an estimate of the correlation for this rela-
tionship based on the scatterplot. Explain your
reasoning.

Help me answer A, C and D please

Sagot :

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