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If the correlation between the physical weight and IQ of children is +0.80, what would this indicate?
There is very little statistical relationship between weight and IQ among children.
Low body weight has a negative effect on the IQ of children.
Body weight has no causal influence on the IQ of children.
Higher IQ scores are associated with greater physical weight among children.
Body weight is a causal factor in the IQ scores of children.