2. The independent and dependent variables in Figure 3 are the same as in Figure 2, as well as the relationship between the variable. The difference is that figure 3 displays the relationship with regard to infants with a body weight of 1001-1500 grams, and figure 2 deals with infants with a body weight equal to or lesser than 1000.
3. According to figure 3,” in each instance, the y intercept was significantly greater (p < 0.001) than the value for comparable lines of best fit in infants with birth weight ≤1,000 grams.”; This is evident when comparing the y-intercepts in each graph.
4. According to the equation, the y-intercept is 43.2 and the slop is 0.17. “x” represents the independent variable of postnatal age in hours.
5. If the value of x is postnatal age of 30 hours, then the value for SBP equals 43.2 + 0.17(30) or 48.3.
6. If the value of x is postnatal age is 30 hours, then SBP = 50.3 + 0.12(30) or 53.9.
7. The SBP reading for question 6 is higher than that of question 5. This is mostly due to the significant difference in y-intercepts.
8. If the value of x is postnatal age is 30 hours, then DBP = 25.8 + 0.13(30) or 29.7.
9. If the value of x is postnatal age is 30 hours, then DBP = 30.4 + 0.11(30) or 33.7.
10. The DBP when the value of x is postnatal age of 60 hours is 30.4 + 0.11(60) or 48.3. This value is higher than the DBP when x is a postnatal age of 30 hours because the equation is the same, but the direct positive relationship correlates with a higher DBP value for a higher postnatal age.