why are dummy variables necessary in regression analysis

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Ngày tải lên: 24/03/2014, 03:20

... correlation matrix was initially made for all independent variables in order to determine which indicators to be included in the final model. For those variables that were in- ter-correlated and ... followed up to the age of 7 and 10 years. The study includes medical record examination and a ‘spectral analysis in remaining and non-remaining cases at the age of ten of asthma symptoms, signs ... reporting asthma or not reporting asthma at the age of 10) and least highly inter-correlated, were included in the final multiple logistic regression model. Odds ratios and 95% confidence intervals...

Ngày tải lên: 26/10/2012, 09:48

... maturity using 1976 industry weights. The difference increases to more than 20% in 2000. This suggests that changes in industry weights play an important role in explaining the decline in debt maturity. ... in debt 14 In untabulated results, we obtain similar findings if we add to the model control variables included in Table 6. We also obtain similar findings if we estimate the Fama and MacBeth regression ... with listing vintage is not important in explaining the trend in debt maturity. Although firms are listing earlier in their life cycle, this is not sufficient to explain the time trend in debt maturity....

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Ngày tải lên: 21/09/2013, 15:11

... As shown in Figure 8-9 , two important bits of information are sequence information and timestamping. RTP uses the sequence information to determine whether the packets are arriving in order, ... is queuing delay. Queuing delay occurs when more packets are sent out than the interface can handle at a given interval. Cisco IOS software is good at moving and determining the destination ... problems in determining when speech ends and begins, and in distinguishing speech from background noise. This means that if you are in a noisy room, VAD is unable to distinguish between speech...

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Ngày tải lên: 20/12/2013, 18:17

... income (Y) for household. We include the following quality variables in the form of dummy variables Written by Nguyen Hoang Bao May 22, 2004 Applied Econometrics Dummy Variables 7 3) In ... independent variables used in regression equations, which usually take values over some continuous range. Frequently, one may wish to include the quality independent variables, often called dummy variables, ... Econometrics Dummy Variables 8 4) Use data file SRINA 4.1) Regress Ip on Ig 4.2) Repeat the regression using (i) an intercept dummy; (ii) a slope dummy; and, (iii) both slope and intercept...

Ngày tải lên: 27/01/2014, 11:20

... continued fall in Irish house prices is examined. The incre a s e d rate of decline in 2011 resulted in Irish prices being almost 50 per cent down from peak levels of mid 2007. Accordingly, in ... Kennedy and McQuinn, Why are Irish house prices still falling? Economic Leer Se Why are Irish house prices still falling? Gerard Kennedy and Kieran McQuinn 1 Vol. 2012, No. 5 Abstract In this note, ... and Financial Services Authority of Ireland. [18] McQuinn, K. and G.O’Reilly (2 0 0 8 ) . “Assessing the role o f income and interest rates in determining house prices,” Economic Modelling, Vol....

Ngày tải lên: 16/02/2014, 11:20

... 11] Bank lending and total reserves When interpreting data such as that in Figure 1, it is important to keep in mind that total reserves in the banking system are determined almost entirely ... affairs in this example, when the interbank market is performing this function efficiently. Also note that total reserves in the banking system are $20, all of which are required reserves. In this ... offsetting the decline in Bank B’s lending. Given the nature of the problem in our example, however, the central bank might be able to intervene more effectively in another way. Suppose that instead...

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Ngày tải lên: 18/02/2014, 04:20

... Program? 2.1 Introduction 9 2.2 Immunization in India 9 3 Is ICDS the answer to malnourished children in India? 3.1 Introduction 31 3.2 Child Development Programme In India 31 3.3 ... was conducted in 1992-93, followed by NFHS-2 in 1998-99 and NFHS-3 in 2005-06. NFHS-3 data is obtained from interviewing 124,385 women in the age group 15-49 years and 74,369 men in the age group ... to invest in combating nutrition reduces potential economic growth. In India, with one of the highest percentages of undernourished children in the world, the situation is dire. Moreover, inequalities...

Ngày tải lên: 18/02/2014, 15:20

... 1996. The data are obtained from a trading house that chose the real-time feed, permitting the collection of some historical information for analysis. 4 Prices are denominated in Swedish cur- rency ... Street, Covent Garden, London WC2H 9HE Printed in Singapore. ADVANCES IN QUANTITATIVE ANALYSIS OF FINANCE AND ACCOUNTING VOLUME 3 Essays in Microstructure in Honor of David K Whitcomb March 9, ... This, in turn, implies liquidity clustering in an environment in which informed trading further exaggerates the clustering effect. In Scharfstein and Stein (1990), large order flows, observable...

Ngày tải lên: 19/02/2014, 13:20

... max (i,j):i=j v i r ji v j r ij ). PLACE PHOTO HERE Libin Jiang received his B.Eng. degree in Electronic Engineering & Information Science from the Univer- sity of Science and Technology of China in 2003 and the M.Phil. degree in Information ... degree in Information Engineering from the Chinese University of Hong Kong in 2005, and is currently working toward the Ph.D. degree in the Department of Electrical Engineering & Computer Science, ... Engineering from the Indian Institute of Technology, 1980, a M.S. in EE from UC Berkeley, 1982, a M.A. in Mathematics, UC Berkeley, 1983, a C.Phil in Mathematics, UC Berkeley, 1984 and a Ph.D. in...

Ngày tải lên: 05/03/2014, 23:20

... 5000 Equity Index Worldscope Table 1. Indices in SRI fund performance studie s Major sustainability indices Dow Jones Sustainability Index STOXX FTSE4Good Global Dow Jones Sustainability Index World Ethical ... sustainability indices, and five (12%) incorporate regional sustainability indices. For a complete list of indices used in the studies, we refer to Table 1. 0 5 10 15 20 Major Index Major Sustainability ... responsibility information translates into actions by the fund. Survivorship bias 4. Incorporate dead funds into the analysis or explain how refraining from dead funds and stocks might in uence the...

Ngày tải lên: 07/03/2014, 16:20

... preparation, including (i) preliminary trimming, washing, soaking, slicing, or chopping; (ii) the cooking process; (iii) holding of the cooked food on a steam table, in a warming oven or insulated ... refraining from overcooking; and (vi) using cooking water for soups. Steaming or pressure cooking and stir- frying result in less vitamin loss than boiling or typical pan frying. References 1. Institute ... treatments, freezing, frozen storage, and thawing. Vitamin losses occur mainly in the prefreezing treatments (e.g., blanching, washing, peeling, trimming, and grinding). The actual freezing step does...

Ngày tải lên: 08/03/2014, 00:20