scholarly journals Statistical Measures of Location: Mathematical Formula Versus Geometric Approach

Author(s):  
ADENIRAN Adefemi Tajudeen ◽  
OJO Johnson Funminiyi ◽  
FAWEYA Olanrewaju ◽  
BALOGUN Kayode

Graphical method and mathematical formula are the two approaches for estimating measures of location. Understanding of many instructors of introductory statistics classes are: mean cannot be graphically determined and numerical (formula) approach is more precise than geometrical technique. Contrary to their understanding, this study estimate mean of a dataset geometrically (from histogram) by determining the centroid of histogram drawn from such data set. In addition, we also make known that mathematical formulas for mean, median and mode were derived geometrically (either from ogive or histogram). Finally, the research illustrated the two techniques with a survey data and established that the two approaches produce same results.

2020 ◽  
pp. 135406882090802
Author(s):  
Sejin Koo

Studies of party activism highlight that party activists are driven by various motivations and that these affect their level of activism. However, it remains unclear whether policy-motivated activists are more engaged in party activities than those motivated by other incentives and whether the motivation–activism link varies with party characteristics. This article investigates these questions by focusing on political actors linking parties and voters in the local community. I use a party activist survey data set collected during recent national election campaigns in three Asian young democracies: Taiwan, Korea, and Mongolia. The results demonstrated the prominence of policy motivation as an impetus for activists’ intraparty commitment. I also found that the positive effect of policy motivation is especially robust in small parties, while it is muted in large parties and that party membership increases the probability of intraparty commitment, challenging the widely held belief that formal membership is pointless in Asian parties.


2019 ◽  
Vol 54 (1) ◽  
pp. 73-91 ◽  
Author(s):  
Bert van Pinxteren

Africa is a continent of considerable cultural diversity. This diversity does not necessarily run in parallel to the national boundaries that were created in Africa in the colonial period. However, decades of nation building in Africa must have made their mark. Is it possible nowadays to distinguish national cultures in Africa, or are the traditional ethnolinguistic distinctions more important? This article uses an approach developed in cross-cultural psychology to examine these questions. In 2012, Minkov and Hofstede published an article in this journal analyzing World Values Survey data from seven countries in Sub-Saharan Africa at the level of subnational administrative regions. They argued that national culture is also a meaningful concept in this region. This study reexamines the matter. It uses an innovative approach, looking at ethnolinguistic groups instead of at administrative regions and using the much more extensive Afrobarometer survey data set. It finds that although the Minkov/Hofstede study still has merit, the picture is more nuanced in several important ways. There is not one pattern that adequately describes the situation in the whole of Africa.1


2000 ◽  
Vol 66 ◽  
pp. 257-295 ◽  
Author(s):  
Trevor Kirk ◽  
George Williams ◽  
A. Caseldine ◽  
J. Crowther ◽  
I. Darke ◽  
...  

Excavations at the Glandy Cross monumental complex during 1991 and 1992 formed part of an integrated programme of evaluation, rescue, and research by Dyfed Archaeological Trust (DAT). Enclosures, pit circles, standing stones, and cairns were excavated and their environs systematically surveyed. Radiocarbon dates show the monumental complex to have been constructed between c. 2190–1530 cal BC. However, the earliest activity at the site may date to c. 4470–4230 cal BC. A defended enclosure was constructed on the peripheries of the complex c. 830–510 cal BC.The 1991–92 excavation results are presented along with a summary of survey, salvage, and research spanning the period 1981 to 1992. This new data set is tentatively interpreted in terms of historical process and the social practice of monumental construction. A brief commentary on heritage management at Glandy Cross is also presented.A note on authorship: one of the authors (George Williams) directed the Glandy Cross excavations during 1991–92 and prepared an initial draft of the project report. Following his retirement from DAT a project editor (Trevor Kirk) was commissioned by Cadw: Welsh Historic Monuments to guide the project towards publication. This paper was largely penned by the project editor, though the excavation and survey data were produced by George Williams and his fieldwork team. The excavation and survey archives are held at the offices of DAT.


2022 ◽  
pp. 135406882110649
Author(s):  
Carlos García-Rivero ◽  
Enrique Clari

Historically, ethnicity has been considered to play a fundamental role in voting behaviour in Africa. However, researchers on the issue have found contradictory conclusions. The most recent research concludes that the African voter is more rational than expected. Overall ethnicity seems to be less influential than theory used to suggest. Against this background, this paper analyses vote for governing party in Africa and presents evidence that the method and data set used will have an important influence upon the final result. The research takes form of a quantitative analysis making extensive use of survey data from 2005 to 2019. Results indicate that ethnicity, although not exclusively, is still an explanatory factor. At a glance, African vote is rationally ethnic.


Author(s):  
Hai Wang ◽  
Shouhong Wang

Survey is one of the common data acquisition methods for data mining (Brin, Rastogi & Shim, 2003). In data mining one can rarely find a survey data set that contains complete entries of each observation for all of the variables. Commonly, surveys and questionnaires are often only partially completed by respondents. The possible reasons for incomplete data could be numerous, including negligence, deliberate avoidance for privacy, ambiguity of the survey question, and aversion. The extent of damage of missing data is unknown when it is virtually impossible to return the survey or questionnaires to the data source for completion, but is one of the most important parts of knowledge for data mining to discover. In fact, missing data is an important debatable issue in the knowledge engineering field (Tseng, Wang, & Lee, 2003).


1999 ◽  
Vol 93 (4) ◽  
pp. 891-899 ◽  
Author(s):  
Martin P. Wattenberg ◽  
Craig Leonard Brians

As political campaigns become increasingly adversarial, scholars are giving some much-needed attention to the effect of negative advertising on turnout. In a widely recognized Review article and subsequent book, Ansolabehere and his colleagues (1994, 1995) contend that attack advertising drives potential voters away from the polls. We dispute the generalizability of this claim outside the experimental setting. Using NES survey data as well as aggregate sources, we subject their research to rigorous real-world testing. The survey data directly contradict their findings, yielding no evidence of a turnout disadvantage for those who recollected negative presidential campaign advertising. In attempting to replicate Ansolabehere et al.'s earlier aggregate results we uncover quite substantial discrepancies and inconsistencies in their data set. We conclude that their aggregate study is deeply flawed and that Ansolabehere et al. exaggerated the demobilization dangers posed by attack advertising, at least in voters' own context.


Data in Brief ◽  
2018 ◽  
Vol 19 ◽  
pp. 1120-1123 ◽  
Author(s):  
H.O. Falola ◽  
O.A. Oludayo ◽  
D.M. Akinnusi ◽  
A.O. Osibanjo ◽  
O.P. Salau

Public Health ◽  
2019 ◽  
Vol 170 ◽  
pp. 122-128
Author(s):  
Kaushik Chattopadhyay ◽  
U. Akagwire ◽  
M. Biswas ◽  
R. Moore ◽  
G. Rajania ◽  
...  

1988 ◽  
Vol 25 (2) ◽  
pp. 193-203 ◽  
Author(s):  
J. Douglas Carroll ◽  
Paul E. Green

Current methods of multiple correspondence analysis (MCA) provide configurations that are expressed in terms of principal axes. These solutions are not invariant over rotations. The authors propose an approach to MCA that entails an INDSCAL analysis of normalized Burt matrices (as commonly obtained from MCA). The resulting configuration is uniquely oriented and dimension weights also are obtained for each contributory data set. The method is applied to survey data describing relationships among respondent demographic characteristics and recent car purchases.


Author(s):  
Simone Zandara ◽  
Pere Ridao ◽  
David Ribas ◽  
Ricard Campos ◽  
Angelos Mallios
Keyword(s):  

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