1. Measures of location - Percentiles, deciles, and quartiles A growth chart is a plot of the percentiles of growth measurements, such as weight and height, for a population of infants or children. It...

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Extracted text: 1. Measures of location - Percentiles, deciles, and quartiles A growth chart is a plot of the percentiles of growth measurements, such as weight and height, for a population of infants or children. It is used by pediatricians to assess a child's growth over time. The Centers for Disease Control and Prevention (CDC) is a U.S. agency that has developed growth charts for clinical use by health professionals. The most recent charts were published in 2000. Growth Chart: Weight by Age for Boys 0-24 Months at the 2nd, 5th, 10th, 25th, 50th, 75th, 90th, 95th, and 98th Percentiles 36 16 34 - 15 -98 32 - -95 +14 30 - 90 13 28 - -75 26 - 50 F 12 24 - 25 11 22 - -10 -5 10 20 - 18 - 3 16 - 14 - 6. 12 - 5 10 - 8 3. 6 - 2 4 - Birth 3 9 12 15 18 21 24 Age (months) The 2000 CDC growth charts use a reference population of both breast-fed and formula-fed infants. Breast-fed babies tend to gain weight more rapidly than formula-fed babies in the first 2 to 3 months of their lives, but they tend to weigh less than formula-fed babies from 6 to 12 months. David is a healthy baby who was exclusively breast-fed for his first 12 months. Which of the following is most likely a description of his weights (at 3, 6, 9, and 12 months of age) as percentiles of the CDC growth chart reference population? O 10th percentile at 3 months; 40th percentile at 6 months; 75th percentile at 9 months; 95th percentile at 12 months O 75th percentile at 3 months; 85th percentile at 6 months; 95th percentile at 9 months; 95th percentile at 12 months O 30th percentile at 3 months; 30th percentile at 6 months; 30th percentile at 9 months; 30th percentile at 12 months O 65th percentile at 3 months; 35th percentile at 6 months; 30th percentile at 9 months; 20th percentile at 12 months Weight (Ibs.) Weight (kg.)