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mode
normal distribution
standard deviation
median
random assignment
dependent variable
zero correlation
correlation coefficient
longitudinal study
positive correlation
negative correlation
cross- sectional study
operational definitions
mean
ethical principles for animal research
random assignment
population
random selection
reliability
quantitative data
surveys
researcher bias
participant bias
correlational studies
placebo
quasi- experiment
skewed distribution
case studies
68-95-99.7 rule
central tendency
confounding variables
descriptive statistics
ethical guidelines for human research
experiment
experimental group
hypothesis
inferential statistics
naturalsitic observations
normal distribution
