SOAN 2120 Lecture Notes - Lecture 7: Square Root, Significant Figures, Standard Deviation

• School: University of Guelph
• Department: Sociology and Anthropology
• Course: SOAN 2120
• Professor: David Walters

Document Summary

Statistics: smaller groups of numbers that tell a lot about a larger group of numbers; this is the big picture. Statistics is how to make sense of data. Population: the group you need to know information about or gather data from. No one can survey all of america, hence you must use a sample or part of the population. Inference: using one piece of information to infer about other information. to gather data. And with that data he can make inferences on the rest of america. Elements of statistical problems: identify key question being asked and identify the population, determine the design of the experiment. Survey, observation: establish a method to gather the data, choose a procedure to interpret data, see how reliable you data is. Stem and leaf display: continue next class. Calculate the mean, total values added up and divide by the total number of values. For every observation subtract the mean of x and then square it.