SOCY 211 Lecture Notes - Lecture 6: Central Limit Theorem, Confidence Interval, Standard Deviation

• School: Queen's University
• Department: Social Sci, Edu and Soc Work - Sociology
• Course: SOCY 211
• Professor: Bill Nelson

Document Summary

If we know the standard deviation of the sampling distribution, we could use the normal distribution to represent the sample. However, we can only estimate this, because it does not take the uncertainty of standard deviation. If two people take different samples, they will have different results, meaning they also have different population distributions. The cannot change when choosing different samples. If we know the standard deviation of the population distribution, we can find the standard deviation of the sampling distribution. T-score: (memorize this equation for the exam) We are going to say that is unknown for the confidence interval by defining the t-score. For hypothesis testing we are going to define and find out the t-score. Top hat question: statistical theory is based on the distinction between the sample, the sampling distribution, and the population. Which of the following is most affected by the sample size (n): answer: the standard deviation of the sampling distribution.