A Study of Child Development Measures the Age (In Months)

question 7

Multiple Choice

A study of child development measures the age (in months) at which a child begins to talk and also the child's score on an ability test given several years later. The study asks whether the age at which a child talks helps predict the later test score. The least- squares regression line of test score y on age x is y = 110 - 1.3x. According to this regression line, what happens (on the average) when a child starts talking one month later?

• A) The test score goes down 110 points.
• B) The test score goes down 1.3 points.
• C) The test score goes up 110 points.
• D) The test score goes up 1.3 points.
• E) The test score is 108.7.

---

Definitions:

Learning

The process of acquiring new understanding, knowledge, behaviors, skills, values, attitudes, and preferences through study, experience, or teaching.

Readiness

A state of being prepared and willing to undertake or receive something, such as learning new skills.

Cognitive Ability

The ability to carry out advanced cognitive functions such as thinking, recalling, comprehending, and solving problems.

Student Readiness

The degree to which a student is prepared to engage in and benefit from educational activities at their current level of development.