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Tag: inferential statistics

Bootstrap – Matched Pairs

Bootstrap – Matched Pairs

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This week I began with a bootstrap project for a paired-difference/matched-pairs scenario. Download a pdf of the Project Here One of my goals is to get students working with data they have collected, so I had students collect prices for 25 identical items at two stores. We used this for one of the investigations. Investigation 1 A researched was investigating whether sons are taller than their fathers. My students were provided with 13 matched pairs. I had them find the…

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Bootstrap Method – Estimating a Population Mean

Bootstrap Method – Estimating a Population Mean

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Last week we did our third project that focuses on introducing inferential statistics earlier in the semester. Download the Activity (pdf) Here The bootstrap method repeatedly samples from a sample (with replacement) to help develop an interval estimate of any population parameter. For example, if there is a sample of 10 numerical values we select 10 values (with replacement) and compute the mean of that sample. We then repeat that process for a total of 1000 samples. We can then…

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Simulation Activity for a Population Proportion

Simulation Activity for a Population Proportion

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As part of my effort to bring inferential statistics to the beginning of the semester I had students work through their first inferential project. This occurred on the sixth day of instruction. Simulation for a Population Proportion On the previous day we were going over different ways to display qualitative data (frequency tables, pie charts, bar charts). We created a pie chart for a sample of 60 students and it showed that two-thirds of those students were female. I asked…

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My 3 R’s and Mindset

My 3 R’s and Mindset

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I took last semester off (bank leave), so Monday will be the first day teaching students in about eight months. What did I do during that time? I worked on the three R’s: resting, reading, and redesigning my classes. Resting I have taught a full load of classes every semester (and nearly every summer) since I started at College of Sequoias back in 1994. I did not think I needed a break because I did not feel the burnout that…

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