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Scientific Methodology

What is the difference between qualitative and quantitative data? Provide an example of each type.

What is a null and alternative hypothesis?

What is a variable? What are independent and dependent variables?

What is the difference between population and sample? When would you want to use a sample? How would you go able obtaining a sample?

What is the difference between probability and non-probability sampling? Which sampling method would strengthen the research design? Why?

Solution Preview

Qualitative data are observations corresponding to a qualitative variable which gives classification of individuals based on some attribute or characteristic. Quantitative data are observations corresponding to a quantitative variable which provides numerical measures of individuals. For example, male and female are qualitative data, temperatures of 7am and 9pm are ...

Solution Summary

The difference between qualitative and quantitative data are determined. Independent and dependent variables are given. The expert defines null and alternative hypothesis.

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