Using letter grades (A, B, C, D, and F) to classify student performance on an exam is an example of measurement on a(n) _______ scale of measurement
a. nominal c. interval
b. ordinal d. ratio
B
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While trying to discover the nature of the relationship between stress and blood pressure, a researcher asks participants to complete a difficult task. The researcher monitors the participants' blood pressure while some are exposed to noisy distractions and others stay in a quiet environment. This type of research is a(n)
A. correlational study. B. experiment. C. case study. D. placebo control study.
What did Darwin view as the purpose of emotions?
a) to convey information that helps organisms adapt b) to replace slow neural firing with instinctive behavior c) to decrease dependence on purely cognitive reactions d) to communicate our true feelings to others in order to avoid conflict
A parameter is defined as _________
a. the score on the dependent variable of a particular subject in the population b. a number calculated on population data that quantifies a characteristic of the population c. a number calculated on sample data that quantifies a characteristic of the sample d. the number of individuals in the population
Two events are independent if the occurrence of one has no effect on the probability of occurrence of the other
Indicate whether the statement is true or false