Little Handbook – Confidence Intervals
Published: Feb 16th, 2013
View the Reading on Confidence Intervals – Analogy of a Boy and his Dog (≈ 400 words, this is VERY instructive I think!) View the Reading on Confidence Intervals – Introduction (≈ […]
Content Tagged “Confidence Interval Estimate” 
Wrap-Up (Estimation)
Published: Feb 16th, 2013
In this section on estimation, we have discussed the basic process for constructing confidence intervals from point estimates. In doing so we must calculate the margin of error using the […]
Population Proportions
Published: Feb 16th, 2013
Confidence Intervals Sample Size Calculations When is it safe to use these methods? Let’s Summarize CO-4: Distinguish among different measurement scales, choose the appropriate descriptive and inferential statistical methods based on […]
Population Means (Summary)
Published: Feb 16th, 2013
Let’s summarize When the population is normal and/or the sample is large, a confidence interval for unknown population mean μ (mu) when σ (sigma) is known is: where z* is […]
Population Means (Part 3)
Published: Feb 16th, 2013
Sample Size Calculations When is it safe to use these methods? What if σ (sigma) is unknown? CO-4: Distinguish among different measurement scales, choose the appropriate descriptive and inferential statistical methods […]
Learn by Doing – Sample Size
Published: Feb 16th, 2013
A study was done on pregnant women who smoke during their pregnancies. In particular, the researchers wanted to study the effect that smoking has on the pregnancy length. A sample […]
Population Means (Part 2)
Published: Feb 16th, 2013
Other Levels of Confidence Understanding the General Structure of Confidence Intervals CO-4: Distinguish among different measurement scales, choose the appropriate descriptive and inferential statistical methods based on these distinctions, and interpret […]
Did I Get This – Confidence Intervals: Means #2
Published: Feb 16th, 2013
In a recent study 1,115 males 25 to 35 years of age were randomly chosen and asked about their exercise habits. Based on the study results, the researchers estimated the […]
Learn by Doing – Visualizing Relationship between Confidence and Width
Published: Feb 16th, 2013
The purpose of this activity is to use computer simulation to visually explore and reinforce the relationship between confidence and width, for confidence intervals. We will use an applet to […]
Learn by Doing – Connection between Confidence Intervals and Sampling Distributions
Published: Feb 16th, 2013
The purpose of this activity is to help give you a better understanding of the underlying reasoning behind the interpretation of confidence intervals. In particular, you will gain a deeper understanding of […]