Introduction to Statistics (MAT/SST 115.03 2008S)

Class 25: Topic 19: Confidence Intervals: Means

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This outline is also available in PDF.

Held: Wednesday, 2 April 2008

Summary: We return to the computation of confidence intervals, this time using quantitative data (represented by the sample mean, rather than the sample proportion). Along the way, we consider the effects of computing the standard deviation of the sampling population using the sample's standard deviation, rather than the population's standard deviation.

Notes:

Overview:

Confidence Intervals, Revisited

As you know from much of the rest of this text, our authors like to alternate between doing a topic for categorical data and then return to the topic again using quantitative data.

In considering confidence intervals for sample means, we'll ask the same questions we asked about confidence intervals for sample proportions.

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