Question

the table shows the ages and weights of babies at a hospital. newborn class weight check
age (weeks) 1 2 3 3 4 4 6 8 9 9
weight (lbs) 7.5 7.25 8.2 7.95 8.0 9.75 9.25 8.9 9.85 10.0
what is the correlation between age and weight as shown in the table?
none
positive
negative
constant

Explanation:

Step1: List data pairs

Age: [1,2,3,3,4,4,6,8,9,9]; Weight: [7.5,7.25,8.2,7.95,8.0,9.75,9.25,8.9,9.85,10.0]

Step2: Observe trend

Older ages (e.g., 9 weeks) have higher weights (10.0 lbs); younger ages (e.g., 1 week) have lower weights (7.5 lbs). Despite minor fluctuations, weight generally increases with age.

Answer:

B. positive