Summary 2 Why Data Preprocessing? • Data in the real world is dirty – incomplete: lacking attribute values‚ lacking certain attributes of interest‚ or containing only aggregate data • e.g.‚ occupation=“ ” – noisy: containing errors or outliers • e.g.‚ Salary=“-10” – inconsistent: containing discrepancies in codes or names • e.g.‚ Age=“42” Birthday=“03/07/1997” • e.g.‚ Was rating “1‚2‚3”‚ now rating “A‚ B‚ C” • e.g.‚ discrepancy between duplicate records 3 Why Is Data Dirty
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quickly. The Tipping Point changes the way people in America think about selling products and disseminating ideas. According to Gladwell‚ “I don’t really think of myself as an outlier.” This quote reflects to how majority of our citizens behaves in our society because of the fact that there are people who consider themselves as outliers based upon their race‚ appearance‚ and their culture. This situation also displayed in Malcolm X’s life and his point of view of what America is all about. Just like Malcolm
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Fitness Center Report With the launch of AJ’s Fitness and as their current MBA intern‚ I was tasked with analyzing the results of a recent survey that was given the fitness center’s current members. Of the 1‚833 members surveyed‚ we receive 133 usable responses. The following report details an analysis of the results from the membership survey‚ as well as some suggested changes that can be implemented by new management to increase overall membership satisfaction. Overall Satisfaction &
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Gender Discrimination: A Statistical Analysis Gender discrimination‚ or sex discrimination‚ may be characterized as the unequal treatment of a person based solely on that person ’s sex. . It is apparent that gender discrimination is pervasive in the modern workplace‚ however‚ its presence and effects are often misrepresented and misunderstood. Statistical testing plays an important role in cases where the existence of discrimination is a disputed issue and has been used extensively to compare expected
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The Health of your Heart Introduction Keeping a healthy heart is vital for good health. This is because as cardiovascular fitness increases‚ so does the efficiency of the body. The heart becomes stronger and stronger every time you use it. Aerobic or cardiovascular fitness is measured by how efficient a person can pump oxygen to their working muscles to supply energy. It decreases the danger of getting life-threatening cardiovascular diseases. cardiovascular fitness is usually improved
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References: (2012). The Effects of Outliers: Outliers. Statistics Lectures. Retrieved from http://www.statisticslectures.com/topics/outliereffects/ Final Exam: Part II July 21‚ 2014 The study consists of research on adolescent girls who attend four different schools Freyberg‚ R. (2009). Quantitive
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reliable and precise as I don’t have any outliers and my graph shows that the increase of STS is directly proportional to the time taken for the solution to become cloudy. To make sure that my test went accurately and precisely I made sure that my timing was accurately done not pressing the timer too early or late. This again shows that my test was a fair
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values of two variables. Outlier is generally considered to be a data point that is far outside the norm for a variable or population ( Jarrell‚ 1994; Rasmussen‚ 1988; Stevens‚ 1984). 1) The scatter plot is Positive correlation because the values of y tend to increase with increasing values of x. the correlation become stronger as we proceed from a to c. in fact‚ c shows a perfect positive correlation‚ in which all the points fall along a straight line. Yes we have outlier in scatter plot‚ however
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district 12 is 0.8 and 0.8 because soon all the tributes will die. 12. The theoretical probability of the 74th Hunger Games ending in the way that it did is 1/74. 13. The Standard Deviation is 9.36830156. Without the outlier the Standard Deviation becomes 4.2604595. The outlier spreads the information
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airline to‚ " SkyTeam alliance". Then on to receiving awards and recognitions for their transformations of multiple accidents. Plane crashes are commonly caused by bad weather conditions‚ and/or mechanical issues with the plane‚ but Gladwell shares in Outliers various stories of low to no fuel‚ lack of communication
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