Forecasting, Statistical methods, ARIMA, ARCH, and GARCH
Statistical tools for forecasting purpose started using smooth exponential methods in 1950s. These methods were modified depending upon the trend followed in the data sets, based upon the evaluation purpose. From simple additive to multiplicative effects and then automated functions were used to evaluate the complexity in data for forecasting purpose. In this review we summarized the various statistical methods used for forecasting purposes starting from the basic function to complex function in order to evaluate various data sets viz-a-viz time series data of different components, like agricultural products, business outcomes, and stock market exchange rates. In order to evaluate the data sets for forecasting purpose to accuracy or near accuracy, various statistical methods will give different predictions depending up on the range of data sets whether daily, weekly, monthly or yearly, number of observations in the data set, seasonality in data sets, number of missing observation in data sets, and more importantly the variation in data sets to interpret the results.
Indian Journal of Public Health Research & Development 9(9):553-556. 2018
Multicultural children, Play-based self-awareness training, empowerment, Nonparametric statistical methods, and Experimental study
The purpose of this study was to identify the effects of play-based self-awareness training on the empowerment of multicultural children. SPSS version 20.0 for Windows was used for data analysis to verify the effects of the training program. Among nonparametric statistical methods, the Mann-Whitney U Test and the Wilcoxon Singed-Rank Test were conducted. The results of this study are summarized as follows. A play-based self-awareness training program is effective in improving the empowerment of multicultural children. Statistically significant differences were shown in all three lower-level elements of empowerment: personal ability, group consciousness, self-decision. This study has significance in terms that it proved the effects of a play-based self-awareness training program on the empowerment of multicultural children, and the effects were confirmed by an experimental study.
International Journal of Nursing Education and Research 6(2):151-152. 2018
Statistical Methods, Psychometric Property, Instruments, Reliability, and Validity
In the research study platform, instrument is the key core aspect which directs the investigator to undertake reliability and validity. While developing research instrument, psychometric property in an active part where the scientist pay attention towards reliability and validity. In other words, psychometric property refers to the reliability and validity of an instrument. Psychometrics is the construction and validation of measurement instruments and assessing if these instruments are reliable and valid forms of measurement. In behavioral medicine, psychometrics is usually concerned with measuring individual's knowledge, ability, personality and types of behaviors.