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Infant Mortality Rates (per 1,000 Births) Vs. Health Care Expenditure (%GDP) in 2012 By: Marissa Taylor, Felicia Pascoal and Ellie Callery Background Information: ➔ Infant Mortality is classified as the death of a baby before his or her first birthday. ➔ The risk of a child dying before completing the first year of life was highest in the World Health Organization African region (63 per 1000 live births),was about six times higher than that in the World Health Organization European region (10 per 1000 live births). ➔ Globally, the infant mortality rate has decreased from an estimated rate of 63 deaths per 1000 live births in 1990 to 35 deaths per 1000 live births in 2012. Annual infant deaths have declined from 8.9 million in 1990 to 4.8 million in 2012. ➔ Most babies dies with the first year to these top 5 factors: Born with serious birth defects Born too small or too early Victims of Sudden Infant Death Syndrome Affected by maternal complications during the pregnancy. Victims of Injury (e.g. Suffocation) Background Information: ➔ This rate is often used as an indicator to measure the health and well-being of a nation, because factors affecting the health of entire populations can also impact the mortality rate of infants. ➔ Total health expenditure is the sum of public and private health expenditure. It covers the provision of health services (preventive and curative), family planning activities, nutrition activities, and emergency aid designated for health but does not include provision of water and sanitation. Part 1: Infant Mortality Rates vs. Total Health Expenditure (% of GDP) in the World's Wealthiest Countries Infant Mortality Rates (number of deaths per 1,000 births) in 2012: Hypothesis: I predict that the Infant Mortality Rate for the 15 Wealthiest Countries of the World will have a direct link to each country’s percentage of Gross Domestic Product spent on the Total Health Expenditures that are in place with in the country. Sampling techniques: The data used in this assignment was formed by using Cluster Random Sampling technique. Firstly, I collected information on all countries to determine the order of wealthiest to poorest, dependent on their GDP in millions of U.S dollars in 2012. I then took the top 15 wealthiest countries on the list. In doing this; I divided the entire population of the world into groups and then chose a sample of the entire population I would use for my data. Another sample technique that was used was; Convenience Sampling. All the data I need was easy to access over the internet in files that were available to the public. Frequency Table for Infant Mortality Rates (number of deaths per 1,000 births) Histogram: -The histogram shows that there is an overall decrease in the frequency in the amount Infant Deaths per 1000 births in the Top 15 Wealthiest Countries of the World in 2012. -Most of the countries were in the interval of 2.5 having the highest frequency of 8 -Two countries had exceedingly higher amounts of Infant Deaths then the majority of the countries. Relative Frequency Graph: - This Relative Frequency Graph visually shows the fluctuation that is seen in the data of Infant Mortality Rate of the Top 15 Wealthiest Countries of the World in 2012. -There is a drastic drop from the interval of 2.5 to 7.5, from there it increases slightly, then drops from the interval of 12.5 to having a relative frequency of zero for two intervals. then at both intervals; 27.5 and 42.5 there is a slight increase. Cumulative Frequency Graph: -This Cumulative Frequency Graph shows the steady increase of the number of Infant Deaths to it’s cumulative frequency number in the Top 15 Wealthiest Countries of the world in 2012. -Starting at the interval of 2.5, with a cumulative frequency of 8 it increases until the interval of 12.5. From there it plateaus until 22.5. Then there is a slight increase for one interval, then another plateau and then one last increase. Bar Graph of Raw Data: - This Bar Graph represents the amount of Infant Deaths per 1000 Births in the World’s Wealthiest Countries in 2012. - The countries are shown in order of most wealthy of the 15 to the least. -From the graph it shows that there is not a direct correlation of wealth of a country to the Infant Mortality Rate of the country. Box and Whiskers plot: Measures of Spread: Lowest Datum: 2.2 Median (Q2): 4.4 Q1: 152= 7.5 7.52= 3.5 Q1 is between the 3rd and 4th interval. Q1 = 3.4 Highest Datum: 43.8 Q3: 7.5+3.75 = 11.25 Q3 is between the 11th and 12th interval. Q3 = 12.5 Interquartile Range: Q3 - Q1= 12.5 - 3.4 = 9.1 Health Care Expenditure (%GDP) of the Top 15 Wealthiest Countries of the World in the Year 2012 Frequency Table for Health Care Expenditure (%GDP) Intervals Midpoint (x) Frequency (f) f(x) Relative Frequency Cumulative Frequency (𝑥−𝑥̅) 𝒇(𝒙−𝒙̅) (𝑥−𝑥̅)2 𝒇(𝒙− 𝒙̅)2 𝒇(𝒙−𝒙̅)/s 0.8-4.8 2.4 2 4.8 0.133333333 2 -7.01333 -14.0267 49.1868 196.7472 -2.38338 4.8-8.8 6.8 3 20.4 0.2 5 -2.61333 -7.83999 6.829494 61.46544 -1.33216 8.8-12.8 10.8 9 97.2 0.6 14 1.38667 12.48003 1.922854 155.7511 2.120583 12.8-16.8 14.8 0 0 0 14 5.38667 0 29.01621 0 0 16.8-20.8 18.8 1 18.8 0.066666667 15 9.38667 9.38667 88.10957 88.10957 1.594965 total 53.6 15 141. 2 1 15 0.00 175.0649 502.0734 0.00 Histogram: The histogram shows that there is an overall increase in the frequency in the amount of Total Health Expenditures in the Top 15 Wealthiest Countries of the World in 2012. -Most of the countries were in the interval of 10.8 having the highest frequency of 9. - One country had an exceedingly higher amount of Total Health Expenditures by percent of their GDP. Relative Frequency Graph: - This Relative Frequency Graph visually shows the fluctuation that is seen in the data is the Total Health Expenditures by percent of the GDP of the Top 15 Wealthiest Countries of the World in 2012. - The data in this graph shows an increase from the midpoint of 2.4 until 10.8. Then from that interval there is a decrease all the way down to a relative frequency of zero at the interval of 14.8. which is followed by a slight increase. Cumulative Frequency Graph: -This Cumulative Frequency Graph shows the steady increase of the number of it’s Total Health Expenditures to the cumulative frequency number in the Top 15 Wealthiest Countries of the world in 2012. - Throughout the graph there is a large increase in data then a slight plateau between the midpoint 10.8 and 14.8. Bar Graph of Raw Data: - This Bar Graph represents the amount of Total Health Expenditures by percentage of the GDP of the Top 15 Wealthiest Countries of the World in 2012. - The countries are shown in order of most wealthy of the 15 to the least. - The data from this graph shows that most of the Health Expenditures in most countries are pretty close together in range. Box and Whiskers plot: Measures of Spread: Lowest Datum: 3 Median (Q2): 10.8 10.8 11.1 Q1: 152= 7.5 7.52= 3.75 Q1 is between the 3rd and 4th interval. Q1 = 5.6 Highest Datum: 17.9 Q3: 7.5+3.75 = 11.25 Q3 is between the 11th and 12th interval. Q3 = 11.1 Interquartile Range: Q3 - Q1= 11.1-5.6=5.5 Linear Regression: - This scatter plot demonstrates the relation of the infant mortality rate (deaths per 1,000 births) and the Total Health Expenditure (% of GDP) in Wealthiest Countries of the World in 2012. - This shows that as the Total Health Expenditure in each country decrease, there is an increase in that amount of Infant Mortality Rates. Probability and Counting Theory: Question: In the 15 Wealthiest Countries of the World the Total Health Expenditures by percentage of GDP were normally distributed with a mean of 9.41 and a standard deviation of 5.99. Using the Normal Distribution method find the probability of a country having a Total Health Expenditure of less than 6 percent of the GDP. Solutions: Let x represent the number being less than 6. Therefore it’s a 28.43% chance that the Total Health Expenditures of a country will be less than 6 percent of the GDP. Part 2: Infant Mortality Rates vs. Total Health Expenditure (% of GDP) in the World's Middle Class Countries Infant Mortality Rates (number of deaths per 1,000 births) in 2012: Hypothesis: I predict that for the 15 Middle class countries, the Infant mortality rates (per 1,000 births) will be relatively dependent on the Percentage of Gross Domestic Product spent on Health Expenditure in these countries but with few extraneous variables that affect its dependency. š Sampling techniques: In obtaining my data, I used the cluster random sampling technique in order to find my data. I organized the population into groups based on the countries and took the 15 middle class countries were chosen in order to observe the data. Therefore the entire population is divided into groups, or clusters and the clusters were selected; the groups were divided into Infant Mortality Rate (Deaths per 1,000 Births) and Total Health Expenditure (% of GDP). It was also done through a convenience sample because all information was open to the public and easily accessible throughout many websites that were not confidential, but open to all. Infant Mortality Rates (number of deaths per 1,000 births) ~Frequency table~ Histogram: - This Histogram shows the slow decreasing trend of the data between the number of Infant Deaths per 1,000 births and the frequency in 2012. -The trend decreases while at the midpoint of 45.7 it rises 2 in frequency and decreases while being stabilized until it drops at 69.7 and rises again. Relative frequency: - This Relative Rrequency graph demonstrates drastic fluctuation between the number of infant deaths per 1,000 births and its relative frequency in 2012. -The trend decreases until 37.7 (midpoint) and rises at 45.7 decreasing until 69.7 and rising at 77.7; a fluctuating trend. Cumulative frequency: - This Cumulative Frequency graph shows a steady increase in the correlation between the number of Infant Deaths per 1,000 births and its cumulative frequency value in 2012. -There is a slight dip in the trend starting at 29.7 until 37.7 but begins to rise with another dip at 61.7 until 67.9 but again continuing to rise. Bar graph (raw data): - This bar graph demonstrates the Middle Class Countries and the number of Infant Deaths per 1,000 Births in 2012. -The trend fluctuates between each country beginning with the highest Middle Class Country to the lowest. Box and whiskers plot: Lowest datum: 2.5 Highest datum: 76.2 i) Q2= (median) 21.7 ii)Q1= (15=7.5/2=3.75)between the 3rd and 4th interval= 5.7 iii)Q3=(15=7.5+3.75) between the 11th and 12th interval = 45.7 iv) Interquartile range= Q3-Q1 45.7-5.7=40 Total Health Expenditure (% of GDP): Total Health Expenditure (% of GDP) ~Frequency table~ Histogram: -This Histogram shows the Total Health Expenditure (% of GDP) in 2012 and its frequency. -The trend demonstrates a stable Expenditure until 5.5 where it rises and the drops again; dropping until it reaches 11.2. Relative frequency: -This Relative Frequency raph correlates to the Total Health Expenditure (% of GDP) in 2012. - The trend begins at a steady rate but drastically increases at 3.3 until 5.2. Then on it slowly decreases until it reaches 11.2. Cumulative frequency: - This Cumulative Frequency graph correlates to the Total Health Expenditure (% of GDP) in 2012. -The trend shows a steady increase from the midpoints of 1.2 up until 11.2. Bar graph (raw data): -This bar graph demonstrates the Middle Class Countries in the world and their Total Health Expenditure (% of GDP) in 2012. - Each country fluctuates while beginning again with the same pattern; the Highest Middle Class Country to the lowest. Box and whiskers plot: Lowest datum: 2.0 Highest datum: 10.3 i) Q2= (median) 5.2 ii)Q1= (15=7.5/2=3.75)between the 3rd and the 4th interval=5.2 iii)Q3= (15=7.5+3.75)between the 11th and 12th interval=7.2 iv) Interquartile range= Q3-Q1 7.2-5.2=2 Linear regression: - This scatter plot demonstrates the relationship between the two sets of data; the infant mortality rate (deaths per 1,000 births) and the Total Health Expenditure (% of GDP) - This shows that as the Total Health Expenditure rises, there is a slight decrease in Infant Mortality rates. Non- linear regression: - This scatter plot demonstrates the best non linear regression that fits the data and the relationship between the Infant Mortality rate (deaths per 1,000 births) and the Total Health Expenditure (% of GDP) -This polynomial regression (power of 6) is the model that it’s had the highest value in order to best represent the data. Probability and counting theory: 1. Based on the Infant Mortality Rate in Panama; 15.9 (number of deaths per 1,000 births), what is the probability that exactly 6 infants out of 20 died from malnutrition? 2. The Total Health Expenditure in Panama is uniformly distributed with a mean of 8.2 and has a standard deviation of 4.2. If a random country is selected what is the probability that the Health Expenditure would be greater than 4.0? (% of GDP) Solutions: Part 3: Infant Mortality Rates vs. Total Health Expenditure (% of GDP) in the World's Most Undeveloped Countries Hypothesis Under Study: ➔ I predict that for the 15 most undeveloped countries in the world, there will be a direct relationship between Infant Mortality Rates (per 1,000 births) and Health Care Expenditure (%GDP). I feel that the Infant Mortality Rates will be dependent on the Health Care Expenditure within the specific country. ➔ There may be extraneous variables that can affect or skew the relationship between the two variables. Sampling Technique Used: ★ In obtaining and analyzing the data found within the two variables of Infant Mortality rates (per 1,000 births) and Health Care Expenditure (%GDP) it was found that cluster random sampling was the best sampling technique for this study. I chose this sampling technique because of the multi-step process needed to be completed to target a specific sample. Infant Mortality Rates (Per 1,000 Births) in the Year 2012 Frequency Table for Infant Mortality Rates (Per 1,000 Births) # Of Deaths Per 1,000 Births Midpoint (X) Frequency (f) fx (X-X) f(X-X) (X-X)2 f(X-X)2 X-X/s 0.0-10.0 5 1 5 -24 -24 576 576 -1.163354338 10.0-20.0 15 6 90 -14 -84 196 1176 -4.071740184 20.0-30.0 25 2 50 -4 -8 16 32 -0.387784779 30.0-40.0 35 3 105 6 18 36 108 0.872515754 40.0-50.0 45 1 45 16 16 256 256 0.775569559 50.0-60.0 55 1 55 26 26 676 676 1.260300533 60.0-70.0 65 0 0 36 0 1296 0 0 70.0-80.0 75 0 0 46 0 2116 0 0 80.0-90.0 85 1 85 56 56 3136 3136 2.714493456 405 15 435 376 0 8304 5960 0 Total Infant Mortality Rates (Per 1,000 Births) in 2012: Raw Data ➢ This bar graph shows the data for the infant mortality rates (per 1,000 births) in 15 of the world most undeveloped countries (2012). ➢ There does not appear to be any pattern that remains throughout the data in each country. Infant Mortality Rates (Per 1,000 Births) in 2012: Frequency Graph (Histogram) ➢ This graph displays the relationship between the Number of Infant Mortalities (per 1,000 births) and the Frequency of these intervals appearing within the study ➢ It does not appear to have any specific trend relevant to the data displayed. Infant Mortality Rates (Per 1,000 Births) in 2012: Relative Frequency Graph ➢ This graph displays the relationship between Number of Infant Mortalities (per 1,000 births) and Relative Frequencies in the 15 most undeveloped countries ➢ This graph does not appear to have an accurate trend within the information given. Infant Mortality Rates (Per 1,000 Births) in 2012: Cumulative Frequency Graph ➢ This graph represents the relationship between the Number of Infant Mortalities (per 1,000 births) and Cumulative Frequencies. ➢ The representation shows that there is an increasing trend in the data displayed on the graph. Infant Mortality Rates (Per 1,000 Births) in 2012: Box and Whisker Plot ➢ Lowest Datum = 7 ➢ Highest Datum = 80.0 Health Care Expenditure (%GDP) in the Year 2012 Frequency Table for Health Care Expenditure (%GDP) Health care Expenditure (% of GDP) Midpoint (x) Frequency (f) fx (X-X) f(X-X) (X-X)2 f(X-X)2 X-X/s 0.0-3.0 2.5 0 0 -5.6 0 31.36 0 0 3.0-6.0 4.5 7 31.5 -3.6 -25.2 12.96 90.72 5.70007 6.0-9.0 7.5 3 22.5 -0.6 -1.8 0.36 1.08 0.40715 9.0-12.0 10.5 2 21 2.4 4.8 5.76 11.52 1.08572 7 12.0-15.0 13.5 1 13.5 5.4 5.4 29.16 29.16 1.22144 3 15.0-18.0 16.5 2 33 8.4 16.8 70.56 141.12 3.80004 5 55 15 121.5 6.4 0 150.16 273.6 0 Total Health Care Expenditure (%GDP) in 2012: Raw data ➢ This graph displays the raw data relationship between Health Care Expenditure (%GDP) and the 15 most undeveloped countries in the world. ➢ There appears to be a slight decrease as the countries move from left to right. However, it is not a significant trend to consider. Health Care Expenditure (%GDP) in 2012: Frequency Graph (Histogram) ➢ This graph displays the relationship between Health Care Expenditure (%GDP) and the Frequencies of each interval within the study. ➢ There is slight trend of decreasing frequencies throughout the 15 countries under study in this representation. Health Care Expenditure (%GDP) in 2012: Relative Frequency Graph ➢ This graph represents the relationship between Health Care Expenditure (%GDP) and the Relative Frequencies of the 15 most undeveloped countries. ➢ There does not appear to be any notable or accurate trend within the data displayed in this graphic. Health Care Expenditure (%GDP) in 2012: Cumulative Frequency Graph ➢ This graph represents the relationship between Health Care Expenditure (%GDP) and the Cumulative Frequencies within the 15 countries under study. ➢ The trend in the data is that Cumulative Frequency is increasing as the Health Care Expenditure Rate increases. Health Care Expenditure (%GDP) in 2012: Box and Whiskers Plot ➢ Lowest Datum = 3.6 ➢ Highest Datum = 15.6 Health Care Expenditure (%GDP) in 2012: Linear Regression ➢ This graph represents the linear regression relationship existing between Infant Mortality Rates (per 1,000 births) and Health Care Expenditure (%GDP) in the 15 most undeveloped countries. ➢ The linear relationship between the specific variable is not a strong correlation and may not be concise enough to draw the conclusion that there is in fact a relationship. Health Care Expenditure (%GDP) in 2012: Non-Linear Regression ➢ This graph represents the non-linear relationship that exists between the Infant Mortality Rates (per 1,000 births) and Health Care Expenditure (%GDP) in the 15 most undeveloped countries in the world. ➢ This model suggests that the Polynomial 6 relationship between the variables is a moderate to strong correlation given the model shown above on the graphic. Health Care Expenditure (%GDP) in 2012: Probability and Counting Theory ❖ Question: The infant mortality rates in the 15 most undeveloped countries in 2012 were distributed normally with a mean of about 29 and a standard deviation of 20.63. Use the Normal distribution method to determine the probability of a country having an infant mortality that is between 15 and 25. Health Care Expenditure (%GDP) in 2012: Solution Conclusions: Through analyzing the data that pertains to each hypothesis that we predicted for the data in the Worlds Undeveloped, Middle and Wealthiest Countries we came to the following conclusions found through the comparison of the data collected and analyzed between the two variables of Infant Mortality Rates (per 1,000 births) and Health Care Expenditure (%GDP); ~In the World’s Wealthiest Counties the hypothesis proved that there was a direct link between the two variables for some of the Countries. However this did not hold true for all of them, but in general a strong correlation between the two. ~In the World's Middle Class Countries between the two variables there was a slight but not significant relationship to one another; coinciding what was stated in the hypothesis. ~In the Worlds Undeveloped Countries it was found through analyzing the two variables of Infant Mortality Rates (per 1,000 births) and Health Care Expenditure (%GDP) there was a minimal relationship with one another. Bibliography: http://www.childinfo.org/mortality_imrcountrydata.php http://www.gapminder.org/data/ http://www.worldbank.org/en/country http://data.worldbank.org/indicator/SH.XPD.TOTL.ZS/countries