SOC222H5 Chapter Notes - Chapter 5: Confidence Interval, Sampling Error, Standard Deviation
Document Summary
Sampling error: simply by chance, the sample that was drawn was not representative on the population: the more samples you take, the closer the distribution of sample means would get to being a bell curve. Sampling distribution: the distribution of sample means of samples taken from the same population: form the basis for theories and practices in inferential statistical techniques. Confidence intervals (margin of error: procedure with claimed population mean, actual distance number of standard errors percentage probability, procedure with confidence intervals, percentage probability number of standard errors actual distance. Conclusion: using a sample mean to judge the legitimacy of claims about a population, using a sample mean to build a confidence interval within which we can confidently predict that the population mean falls. Chapter 6-the normal curve: a curve with normal distribution. The curved descends rapidly from the center, as you move along the horizontal axis. Chapter 7-percentile and standard scores: raw score don"t communicate much information (98/200)
