Stats basics, chapters 1, 2

Question Answer
Statistics Paradigm Population -> Sample -> Statistics
Parameter measurement of a population
Statistic Measurement of a sample
Error formula 1/(sq rt of N)
Variable something with more than one value (ex age, weight, grade)
Explanatory Variable Explains why the study's being done/how groups are broken up
Mean Average
Confidence Interval is set by the error (percent + and – the error),
Usually 95%
3 Key Components of Statistical Studies Design (logistics), Description (data), Inference (not in descriptive studies, the outcome; assumed/projected)
Area under a bell/normal curve 1
Categorical Variable gender, race, etc
Numerical/Quantitative Variable Discrete = integers and continuous = fractions
Integers numbers without fractions/decimals