Statistical Sciences 2244A/B Lecture Notes - Lecture 1: Normal Function, Combined Oral Contraceptive Pill, Blind Experiment

• School: Western University
• Department: Statistical Sciences
• Course: Statistical Sciences 2244A/B
• Professor: Jennifer Waugh

Document Summary

Descriptive statistics: descriptive statistics is organization, summarization and presentation of data. Inferential statistics is generalization from samples to populations, estimation, hypothesis testing and prediction making based on our sample: ordinal data must have a universal ordering system. Random variables: a random variable is a variable which has a numerical outcome of a random phenomenon, outcome must be a numerical value. Continuous rv and normal distributions: density curves describe a continuous (probability) distribution, with area of 1. 0 and. Sampling distributions: the discipline of statistics is conducting studies to collect, summarize, analyze and draw conclusions from data, descriptive statistics is the organization, summarization and presentation of data. If you sample in a representative way, it is predictable. If they are srs then we know what the mean of this sampling distribution of sample means is. If it is(cid:374)(cid:859)t la(cid:396)ge e(cid:374)ough look to the population distribution: the above only applies for srs.