Project Overview
The goal of this project was to compare the life expectancy in the U.S. to the life expectancy in Zimbabwe from 1960-2010. From the data, the average life expectancy of U.S. from 1960-2010, a total of 50 years, was around 74 years old. While in Zimbabwe, the average age that a person would live until was around 54 years old, showing a difference of 20 years compared to the U.S. I computed the five number summary for U.S. graph is 69, 71, 74, 76, 78, but the five number summary for the Zimbabwe graph is 43, 48, 54, 58, 61.
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The goal of this project was to find out the z-score based on the data of the chapter 1 project shown above. I made density curves for the two life expectancy data in U.S. and Zimbabwe. The two data points that showed the most significant difference between the life expectancy of U.S. and expectancy were during the year of 2003.
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The goal of this project was to determine if there is a correlation between sleep and test grades. A student's school performance can be influenced by many factors. A lack of sleep usually causes the student to feel drowsy and be less attentive during classes, so I gathered data to see the correlation. Explanatory variable is the average amount of sleep (hours) over three-week period. Respond variable is the test grade of the students' midterm math exam. In conclusion, there is a positive correlation between the amount of sleep and test grades.
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The goal of this project was to perform an experiment with a response bias. The type of response bias I will try to illustrate with my project is the wording of a question. I got the list of students, a total of 294 people, in the entire senior class. I used a random number generator to generate 60 of the students so I can separate them into two groups with SRS of 30 students. The first group got the survey with the question of "Although they are way more expensive, would you prefer eating organic food over inorganic foods?". The second group got the same survey with the addition of "because they contain far fewer artificial ingredients." The results have shown that the biased question had influenced the students to more likely answer Yes when asked if they prefer expensive organic products.
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