This website uses cookies to ensure you have the best experience. Learn more

An Overview Of The Bootstrap Method: A Focus On Replicability Analysis

1896 words - 8 pages

Replicability and generalizability are important considerations when analyzing research findings. Result replicability measures the extent to which results will remain the same when a new sample is drawn, while generalizability refers to the ability to generalize the results from one study to the population (Guan, Xiang, & Keating, 2004). If results are not replicable they will not be generalizable. Replicability is important because it determines whether results are true or a fluke. Measures of replicability can be obtained using either external or internal methods. External replicability analysis requires redrawing a completely new sample and replicating the study. Internal replicability ...view middle of the document...

When the bootstrap is utilized for descriptive purposes, the variance in statistic estimates across resamples is examined (Thompson, 1999). The descriptive analysis focuses on the standard deviation of the statistics or the standard error (SE) of the parameter being measured (Thompson, 1999). By examining the fluctuations in the SE for a statistic across resamples, a measure of the stability of the results can be observed (Fan, 2003). For example, a researcher could investigate the means or another statistic across samples. By looking at the SE, the researcher gains insight into how the means vary across resamples, which provides information on measures of result replicability.
Furthermore, the bootstrap method can be used parametrically or non-parametrically. Parametric bootstrapping makes assumptions about the distribution of the population being examined (Boos & Stefanski, 2010). Parameters of the assumed distribution are estimated first (Boos & Stefanski, 2010). Distribution assumptions can be mathematically derived and are based on a set of assumptions about the population (Beasley & Rodgers, 2009). Oftentimes, when conducting parametric bootstraps, researchers assume the distribution is normal, or bell-shaped (Beasley & Rodgers, 2009). Next, random samples are drawn to estimate the probability of a variable obtaining a given value in an interval or to estimate the probability density function (Zientek & Thompson, 2007).
In non-parametric bootstrapping, the researcher does not make any theoretical assumptions about the data distribution. Instead, an empirical estimation of the sampling distribution is created through resampling and replacement (Beasley & Rodgers, 2009). When conducting a non-parametric bootstrap, a great number of resamples are drawn that are the same size as the original sample and then replacement is used (Zientek & Thompson, 2007). Replacement is when a given value is used in the same resample multiple times. Replacement is important because it increases the possible amount of unique resamples, which provides more data on replicability (Beasley & Rodgers, 2009). Non-parametric bootstrapping is utilized more often in research because the procedure does not require theoretical assumptions about distribution shape (Amiri, Von Rosen, & Zwanzig, 2008).
Bootstrap Procedure
When conducting the bootstrap procedure, the researcher must consider the characteristics of the original sample (Zientek & Thompson, 2007). Smaller samples, numerous variables, and small effect sizes can all affect replicability (Zientek & Thompson, 2007). For example, a small sample size or a sample that is mainly composed of outliers will create an inaccurate pseudo population, no matter how many resamples are drawn (Zientek & Thompson, 2007). If the original sample is not representative, the bootstrap procedure cannot give an accurate estimate of result replicability in the population. A larger sample can help combat the likelihood of drawing a...

Find Another Essay On An Overview of the Bootstrap Method: A Focus on Replicability Analysis

Morphology of the Folk Tales as a Method for Analysis

1888 words - 8 pages kind works better to discover not only the past or background causes, but also the meaning that people put into their narratives and actions. Meaning and what “should be” in the future, can only be understood when culture is considered. Propp created an innovative method of analysis based on Russian folk tales about common characters, which are found in many stories from all over the world. From our analysis, we see that a young girl was familiar

Thoughts on a Possible Rational Reconstruction of the Method of

3240 words - 13 pages Thoughts on a Possible Rational Reconstruction of the Method of "Rational Reconstruction" ABSTRACT: Rational reconstructions standardly operate so as to transform a given problematic philosophical scientific account-particularly of a terminological, methodological or theoretical entity-into a similar, but more precise, consistent interpretation. This method occupies a central position in the practice of analytic philosophy. Nevertheless, we

A summary of "Discourse on the Method" by Rene Descartes

758 words - 3 pages Discourse on the Method is Descartes' attempt to explain his method of reasoning through even the most difficult of problems. He illustrates the development of this method through brief autobiographical sketches interspersed with philosophical arguments. Part 1 contains "various considerations concerning the sciences." First, all people possess "good sense," the ability to distinguish truth from fiction. Therefore, it is not a lack of ability

Analysis of The Parable of the Dishonest Steward. Asked to focus on the idea of a parable and analyze this specific parable in the New Testament

2266 words - 9 pages Callirhoe, Chaereas tortured his slaves to obtain the truth from them after he nearly kicked Callirhoe to death. It is stated that, "slaves were tortured as a matter of course in trials or similar circumstances, on the assumption that they would not tell the truth otherwise" (Chariton 27), hence implying that slaves cannot be trusted at all. Later in the story, Mithridates gave an important letter to Hyginus to take to Miletus. Hyginus is described as

An overview of the olympics

580 words - 2 pages The Olympic Games are an international sports competition. In the Olympics, athletes play in many types of games. Some athletes compete in the Summer Olympics. Some compete in the Summer Olympics. The Olympic Games are very old and have a very interesting history.The first Olympic Games were held in Greece in ancient times. They probably began in the sixth century B.C. The contests are held every four years in the summer. The first games lasted

A rugged, precise and accurate new gravimetry method for the determination of gold: an alternative to fire assay method

872 words - 4 pages requirements and standard for any gravimetric analysis. In addition, the process only requires a hot plate, crucible, oven, dessicator, and beakers and for this reason the estimation of the uncertainties present in each of the step is basically determined by the standards of a gravimetric analysis only and does not involve any instrumentation which is subjected to most errors. Works Cited Nahar, S. (2012). A rugged, precise, and accurate new gravimetry method for the determination of gold: an alternative to fire assay method. 1(1), 14-19. Retrieved from http://www.springerplus.com/content/1/1/14

The Use of Capital Punishment on Convicted Murderers is an Effective Method of Deterrance

1545 words - 6 pages The Use of Capital Punishment on Convicted Murderers is an Effective Method of Deterrance Capital punishment is the legal infliction of death as a penalty for violating criminal law. The capital punishment debate, in the United States, has been ongoing for almost four hundred years. Opponents of capital punishment cite that it’s arbitrariness and the execution of the “innocent” as reasons why they oppose it. Supporters of capital

focus on the learner

1027 words - 5 pages vocabulary skills. In this case Nayeli likes to read books as a hobby. During my investigation and research I came up with an answer of my question, “how to increase her vocabulary using what are her interests? or her favorite things to do and things she likes to spend her free time on?”. And I think the best way is by using what she prefers the most and what she’s interested in. A good way to improve her vocabulary is having her read articles

Focus on the Learners

1659 words - 7 pages Assignment 2 - Focus on the LearnerPart A.For the purpose of this assignment, I interviewed Maryanne Y., a 28-year-old Japanese student in the Elementary English class. Maryanne works in a trading company in Japan. Her job requires her to read documents written in English and speak in English with clients. She wants to improve her spoken English and receptive skills so that she can communicate effectively.Maryanne began studying English in

Focus on the Family

1244 words - 5 pages temporary home, they should be helping the child to better understand the situation, and to accept their temporary conditions. The process of helping the families grow should actually begin before the child is put into state care. The strengthening of the family and their stability can be brought up at the first signs of a problem. In some cases, depending on the urgency, I think a social worker should try to resolve the problem at hand that has

Natural Law Theory: with a focus on the views of Cicero and Locke

1475 words - 6 pages manifest declaration of his Will set one above another, and confer on him by an evident and clear appointment an undoubted right to dominion and sovereingty" (Second Treatise, II.4). although Cicero and Locke share the same view of equality, their views of man's intuition differed. Cicero believed that "primitive man" gracius accepted the laws of the "highest power". Locke maintained that man's intuition endowed a sense of freedom to every mind. This

Similar Essays

Starbucks An Analysis With Focus On The Financial Function

974 words - 4 pages change in this value will result in increased or decreased spending on the same amount. A spending that can be passed along to the customer. Social: • Demographics – Demographics plays an important role for Starbucks when determining which parts of the population they need focus their marketing and products at. • Income distribution – A factor that has to be taken into consideration when determining store locations and/or their marketing is

Starbucks: An Analysis With Focus On The Financial Function

2251 words - 9 pages currency will determine the amount Starbucks gets for their money, a change in this value will result in increased or decreased spending on the same amount. A spending that can be passed along to the customer. Social: • Demographics – Demographics play an important role for Starbucks when determining which parts of the population they need focus their marketing and products at. • Income distribution – A factor that has to be taken into

A Focus On The National Symbol Of The Dominican Republic

1481 words - 6 pages Music, as many may know, is an important part of social life and culture. It is used as a form of communication for those that cannot find the correct words to express themselves. This paper will analyze and explore the role that music plays in understanding certain cultures. It will proceed to outline the social history of merengue music in the Dominican Republic, the relationship between merengue and and its path on becoming an important part

An Overview Analysis Of Cloning

1510 words - 6 pages organism cloning, but there are actually three different types of cloning. Molecular, Organism, and Therapeutic cloning. The first one is Molecular cloning, this focuses on when a DNA from an organism is transferred to a self-replicating genetic element such as a bacterial plasmid. In other words, a small piece of the DNA strand is removed and united with a plasmid which reproduces itself to create multiple copies of the same DNA code. This type of