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