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Three assumptions for a correlation are homoscedasticity,linearity,and normality.
Umbilical Cord
The cord connecting the placenta and fetus, through which nutrients pass.
Fetus
The developing human from roughly eight weeks after conception to birth, during which major structures and organs develop.
Alpha-Fetoprotein
A protein produced by the liver of a developing fetus, levels of which are tested during pregnancy as a marker for certain conditions.
Neural Tube Defect Screening
A test on a pregnant woman’s blood during the second trimester to measure the level of alpha-fetoprotein; test results reveal possible defects of the spine, spinal cord, skull, and brain.
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