comparison among many means analysis of variance

... practitioner of the analysis of variance often want to draw as many conclusions as possible about the relation of the true means between individual treatment means (Tukey, 1949) Multiple comparison ... GROUP MEANS WITH ANALYSIS OF VARIANCE OU BAOLIN (B.Economics, USTC) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF SCIENCE DEPARTMENT OF STATISTICS AND APPLIED PROBABILITY NATIONAL UNIVERSITY OF ... small number of such groups A statistic, which appears in a decomposition of the sample variance, is used to define a test statistic for breaking up treatment means in distinct groups of means that...

Ngày tải lên: 16/09/2015, 14:04

... aspects of IR and TC So it is significant to make a detailed comparison and analysis here on the relative value of words and bigrams as features in Text Categorization The organization of this ... reaches a segmentation precision of more than 97%, so we choose it as a representative of state -of- the-art schemes for automatic word-indexing of document) For evaluation of single-label classifications, ... three-character words can often be substituted by one of its sub-bigrams (namely the “intraword bigram” in the next section) without a change of meaning For instance, “标赛” is a sub-bigram of the word “锦标赛(tournament)”...

Ngày tải lên: 08/03/2014, 02:21

... product) # phân tích phương sai aov cho vào object analysis > analysis anova (analysis) 199 Analysis of Variance Table Response: product Df Sum Sq Mean Sq ... anova(model6, model7, model8) Analysis of Variance Table Model 1: height ~ group + age + group:age Model 2: height ~ group + age 195 Model 3: height ~ age Res.Df RSS Df Sum of Sq F 28 1270.44 29 1338.02 ... < 0.05 Để so sánh cụ thể cho hai nhóm, sử dụng hàm TukeyHSD sau: > TukeyHSD (analysis) Tukey multiple comparisons of means 95% family-wise confidence level Fit: aov(formula = product ~ variety...

Ngày tải lên: 30/07/2014, 03:21

... error degrees of freedom and the numbers of means in the subset Tables of these values can be found in many statistics books [5]; s2 is the error mean square from the analysis of variance table, ... partitioning of the total sum of squares is presented in an analysis of variance table (Table 3) The mean squares (MS), which correspond to variance estimates, are obtained by dividing the sums of squares ... is based on the comparison of the range of a subset of the sample means with a calculated least significant range This least significant range increases with the number of sample means in the subset...

Ngày tải lên: 12/08/2014, 20:20

... because of activity against key pathogens Consideration of the influence of appropriateness of empiric therapy against subsequently identified pathogens was beyond the scope of this economic analysis ... LLC Role of the sponsor SM, AQ, and NK of Johnson and Johnson met authorship criteria by participating in the study design, analysis of results, interpretation of findings, and drafting of the ... Independent statistical analysis The accuracy of the data analysis was independently verified by William Shannon, PhD, Associate Professor of Biostatistics in Medicine, Department of Medicine, Washington...

Ngày tải lên: 25/10/2012, 10:02

... a panel of experts consisting of faculty members of Tehran University Departments of Agricultural Extension and Education and food science The initial questionnaire was pilot tested among extension ... intermediate level In the term of knowledge of AOP, 42 percent of respondents rated their knowledge level as "intermediate" and knowledge of about 20 and 38 percent of respondents was below and ... through analysis of extension workers' perception of AOP and some other related topics which are crucial to adopt these products by consumers Purpose and Objectives: The main purpose of this...

Ngày tải lên: 05/03/2014, 20:20

... Collection of Secondary Data 43 3.7 43 3.7.1 Reliability of Data Collected 43 3.7.2 Method of Data Analysis Validity of the data 43 2011 Business and Financial Analysis of BP with comparison ... supportive in terms of having the financial and the business analysis of the company 46 Business and Financial Analysis of BP with comparison to Shell PLC 4.3 2011 Financial analysis of the British ... Financial Analysis of BP with comparison to Shell PLC 2011 A CLEAR STATEMENT OF THE DISSERTATION: The main purpose and the objective of the study are to study the financial and business analysis of...

Ngày tải lên: 25/03/2014, 11:06

... based on the conversion of 5,620 cubic feet of natural gas per barrel of oil equivalent One barrel of oil is equal to one barrel of oil equivalent See MMS, Assessment of Undiscovered Technically ... based on the conversion of 5,620 cubic feet of natural gas per barrel of oil equivalent One barrel of oil is equal to one barrel of oil equivalent See MMS, Assessment of Undiscovered Technically ... years.”) 20 analysis uses the Tahiti project numbers—an average initial investment period of seven years followed by an average production period of 30 years—as indicative of the “typical” offshore...

Ngày tải lên: 31/03/2014, 07:20

... dataset consisting of a total of 168 sequences and the prM and partial E gene (705 nt) dataset of a total of 195 sequences were used for phylogenetic analysis A complete list of the sequences along ... in nucleotide and amino acid sequence among various regions of full-length sequences of different genotypes of DENV-3 With the lack of full-length sequences of viruses belonging to old American ... (Table 4) Analysis of selection pressure among different viral regions of DENV-3 full-length sequences To determine whether higher sequence diversity in certain genes could be the result of natural...

Ngày tải lên: 20/06/2014, 01:20

... important component of HIV care, and high rates of loss to follow up would compromise the effective delivery of HIV care, as well as reliable documentation of mortality Rates of adherence [7], ... sex and date of birth We matched our female UKLFU with the National Study of HIV in Pregnancy and Childhood using soundex code, date of birth, date of HIV diagnosis and country of birth in order ... settings A further important implication of our findings of high rates of loss to follow up is on the interpretation of outcomes, such as toxicity, rates of virological suppression, adherence and...

Ngày tải lên: 20/06/2014, 08:20

... The fraction of the number of full slots over the total number of slots in a frame is represented by means of Egyptian Fractions, where the denominators are a power of two By means of a binary ... the total number of slots per frame needs to be a power of two, such that the fraction of the requested slots over the total number of slots can be represented perfectly by means of an Egyptian ... similar flow as with the gradual arrival of packets, but with an offset that is the result of the packetized arrival of the data The flow of the packet size of 1200 bytes shows a maximum buffer size...

Ngày tải lên: 21/06/2014, 02:20

... Section where In the presence of CFO, the received signal, after DFT demodulation, is given by OFDM SYSTEMS OFDM is a form of mutlicarrier modulation and consists of a number of narrowband orthogonal ... output variance (MOV) for OFDM systems in [13] When N is sufficiently large, the expectation of |dk | is approximately equal to the average value of |dk | among N subcarriers From the previous analysis, ... Performance analysis of the MOV estimator For the MOV estimator, we need to obtain the expected value of |dk | for each trial value of φe The expectation of |dk | is approximated by the average value of...

Ngày tải lên: 22/06/2014, 23:20

... The present analysis was undertaken in a large dataset of 22 double-blind, placebo-controlled, clinical studies of venlafaxine in patients with MDD to identify and assess correlations among these ... number of weeks available), and for the final on-therapy (FOT) visit HAM-D17, MADRS, CGI-S, and CGI-I Table 1: Summary of 22 placebo-controlled clinical trials of venlafaxine for treatment of major ... correlation coefficient (r), a measure of the tendency of two variables to increase or decrease together, was used to measure the correlation of a pair of two efficacy variables measured on the...

Ngày tải lên: 08/08/2014, 23:21

... (σ The The number of trees per plot (x) is the unit of measurement and does not enter into the degrees of freedom Since the analysis is performed on the basis of plot means (sums per plot ... the use of plot means as compared with individual data (table IV) For the total variance, a part of losses is a «logical» reduction due to a lower number of data (V Another part is a loss of /x) ... by comparison of variance- covarience matrix with Kullback’s test (1967) for multitrait analysis Furthermore, we must bear in mind that the bias is lower when the numbers of provenances and of...

Ngày tải lên: 09/08/2014, 03:24

... consider that the low number of events could have limited the statistical power of this analysis Another advantage of IMRT is the possibility to deliver a different level of daily dose to the distinct ... treatment of locally advanced anal canal carcinoma: a comparison of conventional and IMRT plans Radiat Oncol 2007, 15:41-49 14 Mell LK, Tiryaki H, Ahn KH, et al: Dosimetric comparison of bone marrowsparing ... Cite this article as: Ferrigno et al.: Comparison of conformal and intensity modulated radiation therapy techniques for treatment of pelvic tumors Analysis of acute toxicity Radiation Oncology...

Ngày tải lên: 09/08/2014, 09:20

... conflicts of interest Authors' contributions AS was involved in conception and design, acquisition and analysis of data, manuscript writing DOF, JH, RC were involved in design, acquisition and analysis ... of organ volume This differs from the standard nomenclature for brachytherapy dosimetry in other areas of the body where the V10 would refer to the volume of tissue receiving 10% or greater of ... there is an increased risk of radiationinduced heart disease at lower levels of exposure [25,27] Also the risk of radiation induced tumors following exposure to low doses of radiation must always...

Ngày tải lên: 09/08/2014, 09:22

... the lack of systematic evaluation of some of the major end points of late dysphagia using TNE or FEES prevented more robust analysis using more objective endpoints Another limitation of the study ... All of them underwent dilatation at the time of TNE to relieve any physical obstruction Four out of the seven patients who underwent FEES had finding of moderate or severe aspiration to one of ... median duration of 15.6 months However, most of the endpoint events occurred less than year after treatment Given the small number of events, we conjecture that a sub -analysis of swallowing function...

Ngày tải lên: 09/08/2014, 10:20

... through crossing of lines, have received much attention over the whole of this century [10, 31] Nevertheless, the interpretation of these phenomena in terms of genetic variances and covariances has ... too intensive or the testing of them empirically too demanding to be of practical use In this paper we report the results of a complete variance component analysis of an experiment carried out ... the sum of ,,, A dr l ’ * ) the per locus variances and covariances (given earlier) over an arbitrary number of loci In the case of the squared inbreeding depression effects, we have sum of the...

Ngày tải lên: 09/08/2014, 18:21

... the ratio of variance of samples to the variance of the sample mean computed from the estimated autocorrelations (Sorensen et al, 1995) Autocovariance for lagt was estimated as Variance of sample ... respectively To verify the effect of the particular factorization of the posterior density evaluated at the vector of posterior means of the parameters in [11], the analysis of data set in table II was ... (reciprocals of marginal likelihoods) and the MCMPM estimates of heritability for each of the data sets and the lengths of the sampler The estimates of the integration constant for data sets and of table...

Ngày tải lên: 09/08/2014, 18:22

... Lack of agreement with guideline recommendation Interpretation/lack of evidence** Lack of applicability Lack of self-efficacy Lack of outcome expectancy Inertia of previous practice/lack of motivation ... qualitative studies [15] identified six themes of barriers to the implementation of guidelines among GPs: the content of the guidelines, the format of the guidelines, GPs individual experience, ... guideline about the relevance of studying the effects of the guideline on quality of care and the potential improvement of quality of care as a result of implementing the guideline In addition, they...

Ngày tải lên: 11/08/2014, 05:21