Grand Canyon University - HLT 362V HLTV Module 5 Ex14and19 (80points) Graded A+

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Name Karen Westbrook Course HLT362v Date 1/19/17 Section EXERCISE 14 Understanding Simple Linear Regression 1. According to the study narrative and Figure 1 in the Flannigan et al. (2014) study, d... oes the APLS UK formulae under- or overestimate the weight of children younger than 1 year of age? Provide a rationale for your answer. The APLS UK formula overestimates the weight 10-25.4% as they are using the APLS revised formula, and alpha of 0.05 multiplied by age in months and adding 4 inches. 2. Using the values a = 3.161 and b = 0.502 with the novel formula in Figure 1, what is the predicted weight in kilograms (kg) for a child at 9 months of age? Show your calculations. y=0.502 (9) + 3.161 y= 4.518 + 3.161 y= 7.679 kg at 9 mths of age 3. Using the values a = 3.161 and b = 0.502 with the novel formula in Figure 1, what is the predicted weight in kilograms for a child at 2 months of age? Show your calculations. y=0.502 (2) +3.161 y= 1.004 + 3.161 y= 4.165 kg at 2 mths of age 4. In Figure 2, the formula for calculating y (weight in kg) is Weight in kg = (0.176 × age in months) + 7.241. Identify the y intercept and the slope in this formula. y intercept is 7.241, slope is 0.176. (y intercept = weight in kg, slope is 0.176 x age in months) 5. Using the values a = 7.241 and b = 0.176 with the novel formula in Figure 2, what is the predicted weight in kilograms for a child 3 years of age? Show your calculations. y (wt in kg) = (0.176 x (3x12) + 7.241 y=(0.176 x 60) + 7.241 y= 10.56 + 7.241 y= 17.801 kg at 60 mths or 5 yrs of age 6. Using the values a = 7.241 and b = 0.176 with the novel formula in Figure 2, what is the predicted weight in kilograms for a child 5 years of age? Show your calculations. y (wt in kg) = (0.176 x (5 x 12)+7.241 y=(0.176 x 60) + 7.241 y=10.56 + 7.241 y= 17.801 kg at 60 mths /5 yrs of age 7. In Figure 3, some of the actual mean weights represented by the blue line with squares are above the dotted straight line for the novel formula, but others are below the straight line. Is this an expected finding? Provide a rationale for your answer. This is a expected finding. A large standard deviation is [Show More]

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