GCU Statistics Real Exam Prep Questions With Correct Detailed Answers.

Nominal (qualitative) - correct answer name or categorize things such as gender, race, or marital status. Social security numbers are nominal because the number means nothing and cannot be manipulated. Ordinal (qualitative) - correct answer defines the relationship between entities and assigns an order or ranking to each. For example CMS assigns a rank to hospitals participating in NPSG. Interval (quantitative) - correct answer assigns specific distances between the entities being measured. Then length or amount of distance is defined and equal. It can be hours, months, inches, feet or whatever is predetermined with the conceptual framework. Ratio (quantitative) - correct answer similar to interval but the ratio level can define zero. Variable - correct answer characteristic of an item or individual. Could be age, weight, or blood pressure. Independent variable - correct answer is the variable that can be manipulated to determine the dependent variables' value. It can stand alone. Dependent variable - correct answer is dependent on the independent variable. It changes only in relation to the independent variable. Extraneous variable - correct answer is unknown when beginning a research study, but it shows itself in time. Many times it is an unwanted variable and can skew the results of a research study. Bias or manipulation - correct answer is one example of an extraneous variable.Occurs when the researcher influences the results of the study. Continuous Variables - correct answer are most often associated with the quantitative research. The levels of measurement used are usually the interval and ratio levels of measurement. Categorical Variable (Qualitative) - correct answer Differences between groups or categories. The levels of measurement used are usually nominal and ordinal. Descriptive statistics - correct answer provides an estimation of specific variables being examined in the population of interest.Also provides a summary of the basic data collected to represent the population or sample in the research process. Inferential statistics - correct answer form opinions or assumptions of the population of interest. The goal is to establish a conclusion about not only the participants in the sample but also in the population at large. Probability sampling - correct answer is based on the premise that there are known probabilities and participants who have a chance of being selected. Non probability sampling - correct answer participants do not all have the same chance of selection