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Published byQuentin Brown Modified over 8 years ago
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Carli Young Annaliese Prusse Stephanie Harper Hannah Minkus Patrica Molyneux Is Birth weight Related To Gestational Age?
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Gathered data by asking women for the gestational weeks and weight of their babies at birth. Each person from the group asked 30, or more, individuals for this information. Individuals were sampled from work, church, friends and family members, and neighborhoods. The information was organized and analyzed using StatCrunch. Study Design
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Statistics for Variable 1 (Gestational Age)
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BoxplotHistogram Graphs for Gestational Age
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Statistics for Variable 2 (Weight)
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Boxplot Graphs for Weeks Histogram
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Linear Correlation Coefficient (R) = 0.6179 Equation for line of regression (y=a+bx) : y = -6.8237 +.3558x Correlation
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Didn’t take into consideration multiple births and male vs. female birth weight variance. Converting weight into decimals. Changing the weight from pounds to the Imperial System for data collected from individuals in Canada. Collecting our data from group members and compiling into one table. Difficulties Encountered
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Our first variable, gestational weeks, is skewed to the left. More babies are born closer to their full term than early. The second variable, weight, is also very slightly skewed to the left. The linear correlation coefficient, or R, is.6179, and according to the table for Pearson’s Correlation Coefficient the critical value is.195. (Note: Our degree of freedom was 207, or n-2, and the closest degree of freedom on the table is 100; this is what was used) Analysis
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Because our correlation coefficient is greater than the critical value, we can say that there is a statistically significant relationship between gestational age and birth weight in babies. The answer to our research question, “Is birth weight related to gestational age?”, is yes. Interpretation and Conclusion
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