One shortcoming of the Pearson chi-square test is that it only examines the distribution of experiment outcomes, but not their interdependence. For example, the test statistic is invariant against re-ordering the outcomes. To remedy the shortcoming, G. Marsaglia suggested combining consecutive outcomes to form tuples and then examining the distribution of the tuples. The statistic of the test i...

BACKGROUND This retrospective cross-sectional study aimed to investigate the relationship between Chinese medicine (CM) dietary patterns (hot, neutral, and cold) and the incidence of breast cancer among Chinese women in Hong Kong. METHODS Breast cancer cases (n = 202) and healthy controls (n = 202) were matched according to demographics. Chinese women residing in Hong Kong for the past 7 year...

An example of data from a study of disfl uencies in speech is shown in Table 1, which shows the parts of speech of 335 words following three types of disfl uencies. Both the part of speech and the disfl uency markers represent categorical variables. Table 1 shows that 30 uh’s were followed by a noun, 20 uhm’s were followed by a verb, etc. One question a researcher may be interested in exploring...

Background: The Ethiopian epidemic is currently on the wane. However, the situation for infected children is in some ways lagging behind due to low treatment coverage and deficient prevention of mother-to-child transmission. Too few studies have examined HIV infected children presenting to care in low-income countries in general. Considering the presence of local variations in the nature of the...

The recent droughts in Iran made a decline in groundwater table and the migration of villagers to cities was hindered supplying drinking water for the current population. Therefore it should be considered as an important issue. In this regard, it is possible to achieve this goal by constructing underground dams that recently have been suggested to replace by medium and small overland dams. The ...

BACKGROUND Malnutrition, especially under nutrition puts children at increased risk of morbidity and mortality and remains a serious barrier in child growth, development and survival. This is a major public health problem among under- 5 children in Nepal particularly in rural areas. OBJECTIVE To assess the burden and contributing factors for malnutrition in hill community of Ilam district in ...

Probability, Random Chance, and Genetics Why do we study random chance and probability during a unit on genetics? Genetics is the study of inheritance, but it is also a study of probability. Most eukaryotic organisms are diploid, meaning that each cell contains two copies of every chromosome, so there are two copies of each gene that controls a trait (alleles). In sexual reproduction, these two...

In recent years there has been a growing interest in the cultural dimension of foreign language education, and teachers today are expected to promote the acquisition of intercultural competence in their learners. Thus, the present study aimed to investigate the opinions and attitudes of Iranian teachers of English on intercultural competence teaching and to see how and to what extent these opin...