How would the correlation coefficient between birth weight and gestation period computed from all women in the sample compare to the correlation coefficient between birth weight and gestation period computed from only non-smoking women? The correlation coefficient for the entire sample would be closer to 1 than the correlation coefficient for the non-smoking group. O The correlation coefficient for the entire sample would be closer to 0 than the correlation coefficient for the non-smoking group. The correlation coefficient for the entire sample would be the same as the correlation coefficient for the non-smoking group.

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Weight
Babies born with low birth weights (less than 2500 grams) are at an increased risk for many infant
diseases. Researchers in North Carolina collected data to see what variables may influence the
birth weight (in grams) of a child, including whether the mother drank alcohol during pregnancy,
whether the mother smoked during pregnancy, the mother's age (years), the gestation of the
pregnancy (number of weeks from conception until birth), the mother's race, the length of the
birth (hours), and several others. The plot below summarizes some of the variables measured.
3600
3400-
3200-
3000-
2800-
2600-
2400
33
Smoke
Ο Νο
▲ Yes
O
00◄
T
T
34 35 36
O
37 38
Gestation
00
-/1
O
T
39 40 41 42 43
|||
How would the correlation coefficient between birth weight and gestation period computed from
all women in the sample compare to the correlation coefficient between birth weight and
gestation period computed from only non-smoking women?
O The correlation coefficient for the entire sample would be closer to 1 than the
correlation coefficient for the non-smoking group.
O The correlation coefficient for the entire sample would be closer to O than the
correlation coefficient for the non-smoking group.
O The correlation coefficient for the entire sample would be the same as the correlation
coefficient for the non-smoking group.
Transcribed Image Text:1 of 8 < View Policies > Current Attempt in Progress Weight Babies born with low birth weights (less than 2500 grams) are at an increased risk for many infant diseases. Researchers in North Carolina collected data to see what variables may influence the birth weight (in grams) of a child, including whether the mother drank alcohol during pregnancy, whether the mother smoked during pregnancy, the mother's age (years), the gestation of the pregnancy (number of weeks from conception until birth), the mother's race, the length of the birth (hours), and several others. The plot below summarizes some of the variables measured. 3600 3400- 3200- 3000- 2800- 2600- 2400 33 Smoke Ο Νο ▲ Yes O 00◄ T T 34 35 36 O 37 38 Gestation 00 -/1 O T 39 40 41 42 43 ||| How would the correlation coefficient between birth weight and gestation period computed from all women in the sample compare to the correlation coefficient between birth weight and gestation period computed from only non-smoking women? O The correlation coefficient for the entire sample would be closer to 1 than the correlation coefficient for the non-smoking group. O The correlation coefficient for the entire sample would be closer to O than the correlation coefficient for the non-smoking group. O The correlation coefficient for the entire sample would be the same as the correlation coefficient for the non-smoking group.
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