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9213 Uppsatser om Regression analysis - Sida 3 av 615

Modeling Determinants of First-Day Returns from IPOs

The primary purpose of this paper is to find the determinants of first-day returns on the Stockholm Stock Exchange. Our research will cover the 1996 ? 2004 periods. Our secondary purpose is intended to find a profitable trading strategy with regard to future IPOs on the Stockholm Stock Exchange. By using Regression analysis, focusing on company specific factors and the IPO process, we hope to find a function exhibiting statistical significance, determining future first-day returns from which construction of a profitable trading strategy will be possible.

En undersökning om fallolyckor med gångtrafikanter

The purpose of this study was to investigate different relations between the damages of falls and background variables as well as the relation between the falls and the weather condition to later be able to use this report to expand the knowledge among workers at VTI about the pedestrian fall injuries. All of the fall injuries in the data that this study is based on have occurred in Sweden during the time period between January 2003 and December 2011.To be able to answer the questions that this report is based on several statistical methods are used. The statistical methods that have been used during the making of this report are multiple linear regression, binary logistic regression, correlation analysis, association analysis and descriptive statistics as well as visual analysis.The results of the study show that women around menopause age have a tendency to get a big increase in the amount of injuries compared to men of the same age. The study also suggests that men on average tend to have a lower level of injury compared to women.Age also seems to affect both the amount of injuries and the level of injury negatively. The study suggests that the most likely reason for this is both that the intake of ?Fall Risk Increasing Medicine?, which is medicine that increases the drowsiness, is higher among older individuals as well as lower estrogen levels among older women and lower amount of testosterone among older men, which causes a loss of bone density in both sexes.The weather seems to have a strong effect on how many injuries occur but also a noticeable effect on the scale of the injury.

Matrismodellen vs Two-part regressionsmodeller - effekter på Region Skånes resursfördelning

An important task for Region Skåne is to allocate resources to the health care districts. From 1999 to 2002 Region Skåne used needs-based resource allocation as a model for allocating resources. In a needs-based resource allocation individuals with the same socioeconomic and demographic characteristics are assumed to have the same level of need and are therefore allocated the same amount of resources. During the period of needs-based resource allocation a matrix model was used as a method. In the matrix model individuals were divided into cells after each combination of the socioeconomic and demographic variables.

Medborgarnas Förtroende för EU : En fråga om gemensam europeisk identitet?

Den Europeiska Unionen är en mångfacetterad samling länder med ett brett spektra av historisk bakgrund, geografisk placering och ekonomiska förhållanden. I denna uppsats undersöks huruvida en gemensam europeisk identitet kan bidra till en ökad tillit från medborgarna i unionen till EU som institution.Uppsatsens teoretiska underlag består av tidigare forskning. Denna forskning skapar ett fundament för den statistiska modell som används för att besvara frågeställningen.Med hjälp av data samlad ur bland annat Eurobarometerrapporter tar uppsatsen, via multipel linjär regression, fram en modell som förklarar förhållandet mellan den beroende variabeln ?förtroende för EU? och de oberoende variablerna ?uppfattning av gemensam europeisk identitet?, ?avstånd till Bryssel?, ?BNP per capita? och ?antal år som medlem i EU?.Resultatet visar en koppling mellan en högre grad av upplevd gemensam identitet hos medborgarna i ett land och ett ökat förtroende för EU.Vidare visar modellen ett negativt samband mellan förtroendet för EU och ett stigande värde på var och en av de övriga förklaringsvariablerna. Med andra ord: ju längre avstånd till Bryssel, ju högre BNP per capita och ju längre medlemskap i unionen desto lägre förtroende känner den genomsnittlige medborgaren för EU..

VEM V?LJER VINSTEN? P?verkar den politiska f?rgen p? det kommunala styret hur mycket vinst som f?rs ?ver fr?n de kommunala bostadsbolagen?

Every year, Swedish municipalities transfer considerable amounts of profit from public housing companies to the owner municipality. Municipalities are allowed to do this, provided that the money is used to pay for certain purposes. But there are no legal repercussions if they do not comply. Not all municipalities choose to transfer profits. Based on partisan theory, this difference could be explained by the political governance of the municipality.

ETT GEMENSAMT EUROPEISKT F?RSVAR? En kvantitativ analys av attityder till gemensam s?kerhets- och f?rsvarspolitik i EU

Given the current geopolitical situation in Europe and the upcoming election for the European Parliament, it is important to further analyse individuals? attitudes towards European integration, specifically the Common Security and Defence Policy (CSDP). This analysis aims to gain a deeper understanding of individuals attitude towards CSDP. Therefore, the objective of this study is to analyse which factors that plays a leading role in influencing individuals? attitude towards CSDP.

Spontaneous tumour regression

Complete tumour regression is the optimal outcome of cancer therapies. There are however types of tumours that naturally regress. Most of these are benign, dermatological and have an early onset in life. This literature study aims to elucidate the mechanisms behind spontaneous tumour regression. In Libechov Melanoblastoma-Bearing minipigs, an animal-model specifically bred to develop malignant melanoma, the tumours usually involute within three months.

Extra ersättningar vid föräldraledighet : Dess inverkan på föräldraledighetslängden vid olika inkomster och kön

Mothers and fathers in Sweden receive an earnings-related benefit of 80 percent of their income when they take parental leave. There exists a ceiling in the allowance though, meaning that some people with high earnings don?t receive fully 80 percent of their ordinary salary. The length of the parental leave varies between women and men and also among men and women. Various reasons are used to explain this; one of them is economical.

Efterfrågan på beroendeframkallande varor : En studie om hur efterfrågan på snusprodukter har reagerat på prisökningar i Sverige mellan 1999-2009

Denna uppsats behandlar de relativa prisökningar som skett för snusprodukter i Sverige och vill undersöka om dessa har lett till minskad efterfrågan som nationalekonomisk teori föreslår. Utifrån teori och tidigare forskning har en efterfrågemodell konstruerats för att möjliggöra en statistik undersökning.Variablerna som ingår i modellen är inhämtade från Statistiska centralbyråns prisenhet och Swedish Match AB och inkluderar prisuppgifter för varor, försäljningsstatistik och disponibel inkomst under tidsperioden 1999-2009.Resultaten från regressionsanalyser för tidsseriedata visar på att de ökade priserna har haft en negativ inverkan på efterfrågan på snus under den gällande tidsperioden, men att denna effekt varit förhållandevis liten..

Gäddan & fisket i Ringsjöholm : en osteologisk metodstudie i säsong & bevarande

This paper presents the results from an osteological method study of the Ringsjöholm fishbone material. Ringsjöholm is located in Scania, southern Sweden and is 14C dated to 5960-5200 B.P. The aim of this paper is to critically analyse methods used on fish bone material in estimations of season. Three different approaches were used to estimate the fishing season at the Ringsjöholm settlement; 1) identified species, 2) size estimations of the pike based on Enghoffs (1994-95) regression formulae of os dentale, and 3) growth rings of the pike vertebrae.The identified species and the size estimations of the pike points to the fishing being active both during spring and summer. Growth rings analysis of the pike vertebrae didn?t give any quantitative results because of fragmentation.

Analys av bortfall i en uppföljningsundersökning av hälsa

The LSH-study started in 2003 at the department of Health and Society at the University of Linköping. The purpose of the study was to examine the relationship between life condition, stress and health. A total of 1007 people from ten different health centres in Östergötlands län participated. At the follow up, a couple of years later, 795 of the 1007 participated. 127 of the 212 in the attrition turned down the follow up, twelve people were not invited (for example in case of death) and the rest did not respond at all.

En empirisk studie av biståndets effekt på u-länders ekonomiska utveckling 1975-1999

The aim of this paper is to analyze aid, grouped into sectors, and its effect on growth in developing countries, to find out which type of aid has had the most positive effect on growth. We compiled a Regression analysis based on panel data over 81 developing countries from 1975-1999. In our first regression we considered and group countries by institutional quality, in the other we considered and group countries after regional differences. As a measure on institutional quality we used the KKZ-index. The principal aim of this paper was to find out what kind of aid is the most efficient in its influence on growth in LDC?s.

Faktorer som påverkar mobilbanksanvändningen

Many companies today are investing in various computer-based tools to support their planning, decision making or communication processes. However, end users are often reluctant to accept the available information systems, which mean that these investments are extremely risky. Understanding why users choose to accept or reject an information system has proved to be one of the most challenging problems in this research area. Previous studies have focused on users' beliefs and attitudes regarding use intentions, but the results have, however, been both mixed and incomplete. In this study, I have used the Swedish youth? s use intention of mobile banking and a quantitative study was performed based on five different hypotheses derived from previous studies.

Utvärdering av den svenska cykelhjälmslagen för barn under 15 år : Analys av nationella trender i cykelrelaterade huvudskador mellan 1998-2011

Introduction: In January 2005, a nationwide mandatory bicycle helmet law for children under the age of 15 was introduced in Sweden. In the current study, the effect of this law was evaluated by analyzing national trends in hospital admissions due to bicycle-related head injuries during the period 1998-2011.Methods: An interrupted time-series design with segmented Regression analysis was used to evaluate the intervention effect on head injuries as a percentage of all injuries (%HI) among cyclists in age- and sex-specific groups. Effect was measured as a change in level and/or slope of the trend at the time of legislation.Results: A total of 35261 cyclists (0-54 years) were hospitalized due to a bicycle injury during the study period. Linear regression analyses of the entire study period (not segmented) showed significant year-to-year decreases in the %HI of 1.3-1.7% in all age and sex-specific groups (p < .0001). Results from the segmented Regression analysis showed that, at the time of legislation, a significant drop in level occurred among males under 15 years (-4.5% [95% CI: -7.7% to -1.3%], p = .01) and a significant change in slope occurred among females aged 30-54 years (-1.6% [95% CI: -2.9% to -0.2%], p = .025).Conclusions: The law seems to have had an effect on males in the target population (<15 years).

Medierepresentationen av världens länder : Strukturer i fyra svenska nyhetstidningar

This essay casts light on the quantitative aspect of the media representation of foreign news. The purpose of the essay is not only to describe the media representation of the countries of the world, but also to explain the representation out of structures that are mirrored by the mass media. Four hypotheses are stated that are operationalized in the research. These are treating four different factors that are believed to affect the representation, economy, geographical distance, cultural distance and the size of the population. A fifth hypothesis is stating that economy is the most influential of the factors.

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