Descriptive Stats
The mean of the following data set.
10, 5, 8, 4, 3, 9
What is 6.5?
A researcher who believes that there is an actual reality that can be observed through the scientific method.
Who is a positivist?
Includes independent and dependent variables, uses random assignment, and infers cause-and-effect relationships between variables.
What are experimental research designs?
A type of kirtosis in which there is very little variance from the mean.
Sampling method in which researchers choose to interview participants based on differences, such as age, gender, or religion.
The sample standard deviation of the following data set:
10, 5, 8, 4, 3, 9
What is 2.88
A researcher who believes that the scientific method can approximate an actual reality.
Who is a postpositivist?
Designs that do not use random assignment to control for internal validity.
What are quasi-experimental designs?
A distribution of scores characterized by a mean that is smaller than the mode and the median because of a few extreme, low scores.
A scale of measurement that simply classifies or categorizes participants into non-rank-ordered, mutually exclusive groups.
What is a nominal scale of measurement?
The z-scores for raw scores of 5 and 15 for the following data set:
10, 5, 8, 4, 3, 9
What are -0.52 and 2.95, respectively?
What is ontology?
What are correlational research designs?
Th percentage of scores that fall between 3 standard deviations from the mean.
What is 99.72%?
A hypothesis that predicts a difference or relationship between or among groups or variables.
What is an alternative hypothesis?
The amount of variance explained by a correlation of .298.
What is a correlation coefficient that explains 8.9% of the variance?
Begins with facts to draw logical conclusions about other facts.
What is deductive reasoning?
Used to determine the possible causes or consequences of differences that already exist between groups of people. Uses at least one categorical variable.
What are causal comparative research designs?
What is the 15.9th percentile?
What is reliability?
A 99% confidence interval for a mean of 20 with a standard deviation of 5 and an N of 100.
What is a confidence interval of 18.71 to 21.29?
What is consensual qualitative research?
A design in which one person or one case is studied over time related to a particular construct. In this case, a baseline measurement is taken, then treatment is introduced, then the subject's baseline is again measured.
What is an A-B-A single-case or single subject research design?
The percentile for a Stanford Binet IQ score of 126.4.
What is the 95th percentile.
A treatment effect that is 2 standard deviations above the mean of the control group.
What is an Effect Size (ES) of 2?