Quiz 3 Review Flashcards
During the process of designing a research study, you defend an argument for the importance of conducting the study and have provided a strong rationale for the theory applied. What type of validity are you displaying?
Logical Validity
Which of the following types of data is represented by ranking your favourite hobbies from most favourite to least favourite?
ordinal data
If you wanted to complete a study comparing adolescent, middle age, and senior adult health-related behaviours, which sampling method would be most beneficial to ensure that there is an equal representation of each age group?
stratified random sampling
You need to collect a wide range of variables for your research project and you want to use measures that assess anxiety, depression scores, physical activity levels, and physical activity preference. What method of data collection typically involves a mix of rating scales?
surveys (e.g. questionnaires)
What data collection tool relies on specific responses and close-ended answers?
structured interviews
A histogram displays data points that most frequently cluster close to the Y-axis with few data points on the right side of the graph. A histogram displaying this trend suggests what kind of data set?
A positively skewed data set
A “point” distribution (i.e. few high scores and low scores with more frequent scores in the middle) is an example of a distribution that can be described by which term?
leptokurtic
What value can the correlation coefficient range from?
-1.0 to 1.0
What describes a type I error?
the null hypothesis is rejected, when in fact, it is true
What has occurred if you have incorrectly rejected the null hypothesis?
Type I error
What needs to be read in order to adequately evaluate the logical validity of a research study published in a journal?
the entire study from beginning to end.
What is required in order to evaluate the internal validity of a study?
manipulation of the independent variable
