Variables
This type of variable can vary depending on the influence of an intervention in a study
What is a dependent variable
This type of research usually asks many subjects similar questions to obtain data.
What is a Survey
This type of measurement ranks data but the intervals between the data points is not equal or unknown.
What is an ordinal measure.
This value can help determine whether results have statistical significance in hypothesis testing.
What is a P value
This type of test compares the means of two different samples (when the sample size is small)
What is a T test
This variable is often the intervention in an experimental design research study.
What is the independent variable.
In this model, there is a control group, experimental group, pre and post testing and randomized selection into each group.
What is an experimental design.
This type of measure ranks, has intervals that are equal and has an absolute zero as a value.
What is a ratio measure
This statistic measures the average variance from the mean.
What is a standard deviation.
this term reflects errors in a research study due to a reduction in chance. an example may be having poor selection of subjects.
What is bias
This type of research measures more than two variables.
What is Multivariate?
This method uses a control group and experimental group but does not use randomized selection.
What is a quasi-experimental design
Having an inaccurate measurement tool can impact this in a study.
What is validity
These intervals are values to help determine the level of probability your results will accurate.
This type of design examines several to many different studies related to the same topic and synthesizes the data.
What is Meta Analysis
This type of variable is not intended to be measured but can impact the validity of the study
What is a confounding (or extraneous) variable.
This design aims to measure the relationship between one variable and another.
What is a correlational study
Measuring one of these can pose difficult because there is no true one meaning of it.
What is a contruct
This score is expressed in number of Standard deviations from the mean it is. Usually measured between -3 and 3 with a mean of zero.
What is a z score.
This term refers to the starting point of an experimental design that suggests there is no difference between the groups being compared.
What is the null hypothesis
This type of variable is measured in categories rather than a score
What is a Nominal variable.
This type of research does not rely on statistical analysis but rather gathers data looking at a particular subject in great detail.
What is a case study
A measure which gets consistent results over time is said to have this.
Reliability
This type of error happens when the null hypothesis is rejected but it should not have been.
This statistic measures the relationship between two or more variables.
What is a correlation coefficient.