ugers course avaluation Rulgers University-Newark Google Apple Hone-ESPN Islamic

Question

ugers course avaluation Rulgers University-Newark Google Apple Hone-ESPN Islamic Storisan (Shayb ttempts: 1 Score: /13 5. Measures of relative standing (percentiles and quartiles), interquartile range Aa Aa 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 devoted to the protection and promotion of public health. Through one of its units, the National Center for Health Statistics (NCHS), the CDC has developed growth charts fo clinical use by health professionals. The most recent charts were published in 2000. The 2000 cDC growth charts were developed using a reference population of infants. A pediatrician looks up one of the charts and finds that the 90th percentile for weights of baby boys at 15-1/2 months is 26.4 pounds. This means that 90% of the 15-1/2-month-old baby boys in the reference population weigh less than 26.4 pounds or less, and 10%of these baby boys weigh more than 26.4 pounds. , The 2000 cDC growth charts use a reference population of both breast-fed and formula-fed infants. It has been observed that 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. Sarah is a healthy baby who was exclusively breast-fed for her first 12 months. Which of the following is most likely a description of her weights (at 3, 6, 9, and 12 months of age) as percentiles of the CDC growth chart reference population? O 25th percentile at 3 months; 25th percentile at 6 months; 25th percentile at 9 months; 25th percentile at 12 months O 85th percentile at 3 months; 85th percentile at 6 months; 90th percentile at 9 months; 95th percentile at 12 months O 75th percentile at 3 months; 40th percentile at 6 months; 25th percentile at 9 months; 25th percentile at 12 months 30th percentile at 3 months, soth percentile at 6 months; 70th percentile at 9 months, 80th percentile at 12 months The following are weights (in pounds) for a sample of 11 baby girls at the age of 10 months: 17.2 18.4 18.820.3 20.6 21.1 22 23.5 24.6 25.4 26.8 The 80th percentile for these sample data is 25.08 pounds In the sample data, 8 out of 11 observations are less than the 80th percentile, and 2 out of 11 observations are greater then this value.

Explanation / Answer

Ans:

1)90th percentile means that 90% of the 15-1/2 old baby boys have in the population has weight less than 26.4 and 10% of these weighs more than 26.4

2)30th percentile at 3 months,50th percentile at 6 months,70th percentile at 9 months,80th percentile at 12 months.(last option is correct.

3)80th percentile is 24.6(as there are 11 data points,so location of 80th percentile will be appx. 11*0.8=8.8 i.e 9th position)

8 observations are less than 80th percentile and 2 observations are greater than this value.

4)For any data,first quartile is 25th percentile.

Second quartile is 50th percentile.

Third quartile is 75th percentile.

First quartile=19.55

third quartile =24.05

Interquartle range=24.05-19.55=4.5

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.