Qualitative and Quantitative Research Essay

Quantitative research involves collecting numerical data though content analysis, performance tests, personality measures, questionnaires, etc. Quantitative research allows for experimental and non-experimental research. Experimental research tests cause and effect, while non-experimental research, such as, correlation research, relates variables, and survey research describes trends. There are three basic types of quantitative research questions: descriptive research questions, correlational research questions, and causal research questions. However, research involves collecting word data though interviews, open-ended questionnaires, observations, content analysis, focus groups, etc. Qualitative research can explore common experience (Grounded Theory Research), shared culture (Ethnography), an environment (Case Study), or an individual (Narrative Research). Both type of research ask research questions, focus on type of data, and have variables. Research Questions Research Questions are clear, concise, and arguable questions. A qualitative research question â€Å"explores a central concept or phenomenon† (Schreiber 2012). An example of a qualitative research question is how do African American male elementary students read popular fiction written by Caucasian female authors? This is an ethnographic research question that will explore hared culture of a group of people. Differently, a quantitative research question â€Å"relates attributes or characteristics of individuals or organizations† (Schreiber 2012). There are three basic types of quantitative research questions: descriptive research questions, correlational research questions, and causal research questions. Descriptive research questions describe variables being studied. An example of descriptive research question is does reading popular fiction increase test scores in elementary students? This research question is an experimental research question that tests the cause and effect. Another research question is the correlational research question, which relates variables. An example of correlational research question is do elementary students who read popular fiction has a higher test scores than those who do not read popular fiction? This is also a correlation research that relate variables. The final basic type of  quantitative research question is the causal research question. Causal research questions test for a cause and effect relationship between variables. An example of causal research questions is all other factors being equal, do elementary students reading popular fiction achieve better test scores than students reading curriculum-required fiction? This is also an experimental research question that tests the cause and effect. Variables Quantitative research and qualitative research have variables; a variable is any measured characteristic or attribute that differs for different subjects (Lane 2006). Variable can be either independent (IV), or dependent (DV). An independent variable is a variable that remain the same, but the researcher manipulates a dependent variable. Additionally, there are covariate (CoV) relates variable, is related to the DV, and is also a predictor value. In the example of a qualitative research question is how do African American male elementary students read assigned popular fiction written by Caucasian female authors? the IV is gender, age, and ethnicity, the DV is the assigned popular fiction, and the CoV is socioeconomic status. In the example of a quantitative research question is does reading assigned popular fiction increase test scores in elementary students? the IV is the age, gender, and ethnicity, the DV is assigned popular fiction, and the CoV is socioeconomic status. An example of the quantitative research question is do elementary students who read assigned popular fiction has a higher test scores than those who do not read popular fiction? the IV is age, gender, and ethnicity, the DV is assigned popular fiction, and the CoV is socioeconomic status. The final example of a quantitative research question is do elementary students reading assigned popular fiction achieve better test scores than students reading curriculum-required fiction? the IV is age, ethnicity, and gender, the DV is assigned popular fiction and curriculum-required fiction, and the CoV is socio-economic status. Type of Data Quantitative research uses Ordinal, Ratio, or Interval Scale, while  qualitativew research uses Nominal Scale. Both nominal and ordinal data are categorical, but interval and ratio data are continuous. In the example of a qualitative research question is how do African American male elementary students read assigned popular fiction written by Caucasian female authors? That data is nominal. Nominal data is categorical. Nominal data is consists of assigning items to groups or categories that cannot be related to each other (StatSoft 2010). The nominal data is African American and male, a well as Caucasian and female. Moreover, in the example of a quantitative research question is does reading assigned popular fiction increase test scores in elementary students? that data is interval. Interval data rank order, but also quantify and compare the sizes of differences between them (StatSoft 2010). Interval data is continuous. The interval data is the test scores, because they can be higher or lower, but it is not known how much higher. An example of the quantitative research question is do elementary students who read assigned popular fiction has a higher test scores than those who do not read popular fiction? that data is ratio data. Ratio data is continuous. Ratio data rank order, but also quantify and compare the sizes of differences between them. Ratio data has an absolute zero and allows for how many times greater. The research can find out how many times greater are the test scores of elementary student who read popular fiction than those who did not. The final example of a quantitative research question is do elementary students reading popular fiction achieve better test scores than students reading curriculum-required fiction? that data is ratio data. Like the question above, the research can discover how many times greater are the test scores of elementary student wh o read popular fiction than those who did not. Conclusion Both type of research ask research questions, focus on type of data, and have variables. Quantitative research uses an objective/unbiased approach to collecting numerical data from participants and analyzes these numbers using statistics in order to answer a specific, narrow research question. On the other hand, qualitative research uses a subjective/biased approach to collecting words from participants and analyzes/describes these words in  order to answer a broad, general research question. Bibliography †¢Lane, D.M. (2006, June). Glossary. Rice Virtual Lab in Statistics Retrieved January 31, 2014, from http://davidmlane.com/hyperstat/glossary.html †¢Research Methods ** Available in the Presentations section. †¢Schreiber, Deborah Ph.D. 2012 Research Methods in Education †¢StatSoft, Inc. (2010). Electronic Statistics Textbook. Elementary Concepts. Retrieved January 31, 2014, from http://www.statsoft.com/textbook/elementary-concepts-in-statistics/?button=1