PSY-380 Lecture Notes - Simple Random Sample, Percentile Rank, Percentile
Document Summary
Probability: fraction or proportion of all the possible outcomes. Random sampling: selection process wherein each individual in the population has an equal chance of being selected. Simple random sampling: data set obtained using a selection process wherein each individual has an equal chance of being selected. Independent random sample: data set obtained using a selection process wherein the probability of being selected stays constant. independent random sampling: selection process wherein the likelihood of being selected stays constant from one selection to next. Sampling with replacement: a selection process that returns individuals to the population in order to keep probabilities from changing. Sample without replacement: selection process that does not require constant probabilities. Unit normal table: list or proportions of the normal distribution for a full range of possible z scores values. Percentile rank: portion of individuals in distribution with scores less than or equal to the specific score.
