SOAN 3120 Lecture Notes - Lecture 3: Simple Random Sample, Cluster Sampling, Statistical Inference

• School: University of Guelph
• Department: Sociology and Anthropology
• Course: SOAN 3120
• Professor: Ryan Broll

Document Summary

Was o(cid:374)e of the fi(cid:396)st (cid:373)athe(cid:373)ati(cid:272)ia(cid:374)s to use the (cid:858)least s(cid:395)ua(cid:396)es(cid:859) p(cid:396)i(cid:374)(cid:272)iple. Most commonly used distribution that we are confronted with in stats. Bell curved: allows us to make generalizations about the population, examine distribution of scores. Mean, median and mode have the same value. Unimodal only: unimodal (one mode, multimodal- bimodal examples. 2 groups: males, mean= 100, s= 20, n= 1000 females, mean= 100, s= 10, n=1000. Distances on horizontal axis always cut off the same area if we go from -1 to +1, if you split the area in half it will be equal from the middle. We can use this property to describe areas above or below any point. Using the normal curve: to find areas, first, compute a z score. Appendix a has 3 columns (a)= z score (b)= areas between the mean and the z score (c)= areas beyond the z score.