Population Parameters: Population parameters are numerical values that summarize and describe an entire population. They represent the true characteristics of the entire group, but are often unknown and estimated using sample statistics.
Confidence Interval: A confidence interval is a range of values constructed around a sample statistic that is likely to contain the true population parameter with a certain level of confidence.
Sampling Distribution: A sampling distribution is the probability distribution of all possible values for a given sample statistic when repeated samples are taken from the same population.