Data Analytics PIL 14 Excel DescriptiveStatistics TCI=0 95 MOE ZCI=0 95 MOE скачать в хорошем качестве

Data Analytics PIL 14 Excel DescriptiveStatistics TCI=0 95 MOE ZCI=0 95 MOE

In this video, I walk you through calculating the margin of error, which is often confused with the confidence level in Excel. We start by discussing the standard normal distribution and how to find the z-score for a 95% confidence level, which corresponds to a tail area of 2.5%. I also explain why we should use the t-statistic instead of the z-score when working with sample data, and how to calculate it using the T.INV function in Excel. My goal is to ensure you understand these concepts clearly, so please review the calculations and formulas provided. 00:00 Introduction to Descriptive Statistics 04:16 Calculating Margin of Error