Exam 1: The What and the Why of Statistics

Why is a dichotomous variable so powerful?

Suppose that a researcher is interested in studying the work habits of young adults.The researcher hypothesizes that persons first married in their twenties tend to work an average of 5 hours more per week than persons not first married in their twenties.What are the independent and dependent variables?

Identify the independent variable,the dependent variable,and the unit of analysis in the following hypothesis: Documented immigrants in the United States are less likely than undocumented immigrants to use social welfare programs.

Identify the independent variable,the dependent variable,and the unit of analysis in the following hypothesis: Geographically contiguous countries should experience higher rates of migration than non-contiguous countries.

SELECT ALL THAT APPLY. -From the following categories of variables,which of them are mutually exclusive and exhaustive?

The dependent variable is

Given the following research area,develop the set of activities on how the research process should be followed: Bullying is a national problem,particularly among children of various ethnic/racial backgrounds.

Imagine you are a researcher who is interested in knowing whether or not a person was married in their twenties.What would be the level of measurement for this variable?

Which of the following terms is considered a level of measurement?

Identify the independent variable,the dependent variable,and the unit of analysis in the following hypothesis: Interstate migration in the United States lowers state poverty levels.