STAT 2215Q Lecture Notes - Lecture 1: Point Estimation, Statistical Inference, Models 1

• School: UConn
• Department: Statistics
• Course: STAT 2215Q
• Professor: any

Document Summary

Calculator ti (cid:890)(cid:885)/(cid:890)(cid:886) (cid:883) ho(cid:373)e(cid:449)ork per (cid:272)hapter (cid:272)o(cid:448)ered. Observational study (collect data success newly on agro pot patients) Random sampling study (select (cid:884)(cid:882) students from each dept. randomly) Self selection study (an online questionnaire which can choose whether to respond or not) Inference to populations (use characteristic of a sample to inter about the whole population) Doe(cid:374)"t allo(cid:449)s (cid:448)aria(cid:271)le to dire(cid:272)tly (cid:272)ause (cid:272)ut (cid:272)a(cid:373)e. (def. Confounding variable : activity level weight gain (cid:883) notes) The mean is used when set is more symmetric. Median is used when there are more outliers. Sample median : the number greater than half of the samples. Sample mode : the number that appears most among the samples. (cid:1843)(cid:2869), (cid:1843)(cid:2870), (cid:1843)(cid:2871) Sample percentile; the number greater than % of the samples. Sample variance : (cid:1845)(cid:2870)= (cid:2869) (cid:2869) (cid:4666)(cid:2869) (cid:4667) (cid:2870)<= used in this class. Select data graph probalelity plot helps you declare if data is evenly distributed.