A Team of Researchers Computes Correlation Coefficients Between Family Income

question 273

Multiple Choice

A team of researchers computes correlation coefficients between family income and the number of words children hear each hour in the home and between family income and the ratio of affirmations to prohibitions that children hear.What sorts of coefficients are the researchers likely to find?

• A) They should find a positive correlation between family income and the number of words children hear, but a near-zero correlation between family income and the ratio of affirmations to prohibitions that children hear.
• B) They should find a near-zero correlation between family income and the number of words children hear, but a positive correlation between family income and the ratio of affirmations to prohibitions that children hear.
• C) They should find near-zero correlations between family income and both the number of words children hear and the ratio of affirmations to prohibitions that they hear.
• D) They should find positive correlations between family income and both the number of words children hear and the ratio of affirmations to prohibitions that they hear.

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Definitions:

Spinal Cord

A cylindrical bundle of nerve fibers and associated tissue that is enclosed in the spine and connects nearly all parts of the body to the brain.

Posture

The way in which one holds their body when standing or sitting, important for muscle health and overall physical well-being.

Qi

In traditional Chinese medicine, the vital life force or energy that flows through the body, believed to be essential for maintaining health and vitality.