EdTech 505: Review of Internet Sites

Kim Hefty

EdTech 505

Week 9 Assignment:

  1. Review the 20 tutorial Internet sites about data analysis that are included in this week’s introduction. Pick the “Top 3” sites (you decide the criteria) and explain why each site is worthy of being in your Top 3. Min. 50 words per site. Then contribute your overall thoughts on the 20 sites.

This week I finally had somewhat of an advantage ~ I have taught math for 20 years so I am very familiar with basic statistics.

I personally refer students on a regular basis to Khan Academy and his videos. Sal Khan has a way of explaining anything relating to mathematics or statistics in an easy to understand manner. His illustrations allow the viewer to see and hear his thought process.   He speaks casually and explains not only how to calculate the data (mean, median, and mode) but how to interpret it.   He introduces the concept of central tendency and how it is applied in math. He speaks in terms that anyone, even someone without a math background, can understand.

The introduction is obnoxious, especially the music; however, once the lecture starts the professor does a good job of explaining what statistics is and how it is used. I like how he explains the vocabulary of statistics and defines how it can be used. The charts are also very helpful. I like how he incorporates questions from the text book. I would use this site in combination with the Khan Academy video because this site provides different statistical information such as experiments and samples and bias.

This site was one of the most complete of all the sites. It has videos, tutorials, and definitions. It was clearly presented for a higher level statistics student and went well beyond the traditional mean, median, and mode … which was something that I was looking for. The information presented was concise and easy to understand. My only criticism was the video. The information presented was accurate and easy to understand, yet very boring!

 

Overall I preferred the sites that not only defined central tendency and mean, median and mode but the ones that also explained how they are used. The sites that just showed the computation of the data were not complete sites, in my opinion. Overall, all the sites showed how to do the computations and provided mathematical formulas. Some of the sites were too simplistic and only focused on mathematical mean, median and mode. Some sites just defined a statistical concept such as standard deviation. These sites were incomplete. I don’t think any one site is complete and if I were teaching a lesson I would use a combination of sites as Your Teacher recommends. The sites that provided a list of videos and tutorials, such as the Khan Academy link, https://www.khanacademy.org/search?page_search_query=statistics were the most complete.

  1. Bonus (voluntary): If you find another tutorial or video site on either “data sources” or “data analysis” and submit a 4-7 sentence description (similar to what you’d do in the voluntary extra credit Internet Sites Project), you can earn 2 bonus points.

I felt there was one thing missing from the tutorial list and that was how real people use statistics! We use our computers and more specifically, we use Microsoft Excel.  I would add the following links:

http://www.youtube.com/watch?v=efo45eAu-K8 one of the best Excel videos!!

http://www.princeton.edu/~otorres/Excel/excelstata.htm

http://www.youtube.com/watch?v=81BdxdPAoO4

Mean, median, mode, and standard deviation are all easy to compute with a small data list but tedious with large sets of data. Students need to learn how to compute but I believe what’s more important is how to interpret this data. In real life, how measures of central tendency are applied is more important than how they are computed.

 

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