ST 307 Lecture Notes - Lecture 8: Confidence Interval, Statistical Hypothesis Testing, Framingham Heart Study
Document Summary
Inference for a single mean or proportion in sas. Inference is taking sample data and using it to make statements or claims about the population. Some attributes of the pop that we may want to know about. Proportion of individuals with a certain characteristic. These summaries, the mean and proportion, are called parameters. We take a sample of the pop to estimate pop characteristics like sample mean or sample proportion. Issue they vary from sample to sample. Using sample data to make a claim about the population is called statistical inference. Make an assumption about the population, check if data contradicts. See if the results are unlikely to have occurred by random chance. Give range of values we are confident contains the truth. = average length of court cases. Length of a court case follows a normal distribution. Observations are independent and identically distributed (random sample)
