Please explain in your own words how ANOVA can be used to test hypotheses.
What will be an ideal response?
In a nutshell ANOVA, as analysis of variance is known, is a technique for comparing means of a quantitative variable between categories or groups formed by a categorical variable. Suppose, for example, that you have a variable (X) with 3 categories, A, B, and C and a sample of observations within each of those categories. For each observation there is a measurement on a quantitative dependent variable (Y). Thus, within every category or group you can find the mean of Y. ANOVA digs into such data to discover (1) if there are any differences among the means, (2) which specific means differ and by how much, and (3) assuming the observations are sampled from a population, could the observed differences have arisen by chance or do they reflect real variation among the categories or groups in X.
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Identify and discuss the factors that can cause poll results to be wrong.
What will be an ideal response?
According to the critical theory perspective, globalization is the result of which of the following influences? (Choose all that apply.)
a. Material conditions b. Cultural and social conditions c. Institutional conditions d. Geographical conditions
American isolationism permanently ended
A. with the onset of the Great Depression. B. with the bombing of the U.S. naval base at Pearl Harbor. C. when the United States entered the United Nations. D. when France and the United States signed a mutual alliance pact. E. with the Korean War.
Primary challenges in foreign policy relate to the differing views on government’s form and role in people's lives, and which other factor?
a. The absence of a world level authority b. The division of states into friendly and enemy categories c. The levels of organization d. The scarcity of public health interventions