Your paper will include the following:

• A statement of the research question
• A description of the source of the data
• A description of the variables used in the analysis
• Scatterplots with clear labels that facilitate easy visual comparison

Explanations that reflect the use of Unit 3 concepts (form, direction, strength, explanatory and response variables, regression equation, prediction, r and r2)

• An answer to the question based on your analysis of the data

Research Question:

Introduction: Pediatricians use a child's measurements to predict his or her height and weight as an adult. Researchers studying child development measured a sample of 136 children at ages 2, 9, and 18. These children were born in 1928-29 in Berkeley CA. We will examine the relationships between body measurements for children and the corresponding measurement for an 18-year-old.

Use the data in the file titled Child Development to answer one of the following questions.

1. Is strength at age 9 a good way to predict strength at age 18? For which gender is strength at age 9 a better predictor of strength at age 18?

Explain what you are doing in a way that a parent without statistical training could understand.