Posts tagged confidence intervals
Confidence interval for the population mean
Confidence interval for the population mean

A sample mean or sample proportion might be a great estimate of the population parameter, or it might be a really bad estimate. So it would be really helpful to be able to say how confident we are about how well the sample statistic is estimating the population parameter, and that’s where confidence intervals come in.

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Learn mathKrista Kingmath, learn online, online course, online math, probability and statistics, probability, statistics, stats, inferential statistics, inferential stats, confidence intervals, confidence, confidence interval for the population mean
Confidence interval for the population proportion
Confidence interval for the population proportion

If we know how we’re sampling, what confidence level we want to use, and we know the sample proportion and standard error, then we can plug these values into the correct formula, find the critical value associated with the confidence level, and then calculate the confidence interval directly.

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Learn mathKrista Kingmath, learn online, online course, online math, probability and statistics, probability, statistics, stats, confidence intervals, population proportions, sample proportions, confidence intervals for population proportions