Showing 1 - 10 of 73
We looked at evidence from comparative empirical studies to identify methods that can be useful for predicting demand in various situations and to warn against methods that should not be used. In general, use structured methods and avoid intuition, unstructured meetings, focus groups, and data...
Persistent link: https://www.econbiz.de/10005149125
The issue of the relative returns to farmers from R&D and promotion is examined using a multi-sectoral equilibrium displacement model of the Australian beef industry. Total economic surplus changes and their distributions among various industry groups resulting from 1% cost reductions in various...
Persistent link: https://www.econbiz.de/10005581104
We compare three methods of estimating the duration, or half-life, of how well each method works with the data aggregated over different time intervals. In contrast with the existing theory on the, so called, data interval bias, our experiments are based upon realistic advertising schedules. Our...
Persistent link: https://www.econbiz.de/10005149089
This paper investigates the effect of aggregation and non-linearity in relation to television rating forecasts. Several linear models for aggregated and disaggregated television viewing have appeared in the literature. The current analysis extends this work using an empirical approach. We...
Persistent link: https://www.econbiz.de/10005149111
The Consumer Panel of Australia data collected by the Roy Morgan Research Centre is used to investigate the determinantes of brand choice behavior in the laundry detergent market.
Persistent link: https://www.econbiz.de/10005087590
Competitor-oriented objectives, such as market-share targets, are promoted by academics and are common in business. A 1996 review of the evidence indicated that this violation of economic theory led to reduced profitability. We summarize the evidence as of 1996 then describe evidence from 12 new...
Persistent link: https://www.econbiz.de/10005149079
The analysis of economic time series assumes specific economic behaviour of a representative agent. The data used in analysis is generated by aggregating observations of all individuals in a population. This is valid only if all members of a population have the same data generating process, but...
Persistent link: https://www.econbiz.de/10005427607
Age-sex-specific population forecasts are derived through stochastic population renewal using forecasts of mortality, fertility and net migration. Functional data models with time series coefficients are used to model age-specific mortality and fertility rates. As detailed migration data are...
Persistent link: https://www.econbiz.de/10005427608
We propose new tools for visualizing large numbers of functional data in the form of smooth curves or surfaces. The proposed tools include functional versions of the bagplot and boxplot, and make use of the first two robust principal component scores, Tukey's data depth and highest density...
Persistent link: https://www.econbiz.de/10005427617
We study methods for constructing confidence intervals, and confidence bands, for estimators of receiver operating characteristics. Particular emphasis is placed on the way in which smoothing should be implemented, when estimating either the characteristic itself or its variance. We show that...
Persistent link: https://www.econbiz.de/10005427623