The concept of concept intervals is demonstrated by looking at the 95% confidence intervals for 100 sample means from a given population. Confidence Interval Simulation - Student Height
Height data for 200 students originates in a case table and is moved to a sampler engine. There are 35 students in each sample and sigma is known. Posted July, 2016.

SAT Scores
Simulation data is generated by a random digit generator N(1260, 209). There are 45 students in each sample and sigma is known. Note that this model assumes the data is normally distributed and does not deal with scores that fall below 600 or above 2400. See the MATH ACT Dummy Data page to learn how to adjust for scores that fall outside the range.
Posted July, 2015

500 Numbers
Simulation data originates in a sampler engine. The sample size used is 40 numbers and sigma is known. Posted July, 2012; updated July 2013

## Confidence Interval - Simulation

The concept of concept intervals is demonstrated by looking at the 95% confidence intervals for 100 sample means from a given population.Confidence Interval Simulation - Student Height

Height data for 200 students originates in a case table and is moved to a sampler engine. There are 35 students in each sample and sigma is known. Posted July, 2016.

SAT Scores

Simulation data is generated by a random digit generator N(1260, 209). There are 45 students in each sample and sigma is known.

Note that this model assumes the data is normally distributed and does not deal with scores that fall below 600 or above 2400. See the MATH ACT Dummy Data page to learn how to adjust for scores that fall outside the range.Posted July, 2015

500 Numbers

Simulation data originates in a sampler engine. The sample size used is 40 numbers and sigma is known. Posted July, 2012; updated July 2013