Matt+B

For Matt B.

1. Objective: Introduce the meaning and formula for variance and standard deviation. 2. Video URL:

media type="custom" key="19193684" 3. Why did you make the video the way you did? I was trying to incorporate Fathom and statistics software. 4. What are some other ways you could have presented the material using video? Not sure.

Peer Reactions: Nice job, Matt. It serves as a good explanation, as well as a bit of a tutorial on Fathom. The headset makes your voice a bit fuzzy... Dick

Great discussion the intuition behind a measure of spread. The graphical examples were good and pertinent. Well thought out discussion of the topic. The video was a bit long at the end when getting bogged down in the difference between population and sample - and there was nothing about the visuals being shown that helped clarify.

The beginning part of the video was great... you were quickly able to show what the graphs looked like, what the standard deviation was, etc. Towards the end you lost me (but that may be because I am not a math person). Also in the future you may want to look into using an external microphone; Every "s" in your speech sounded "hissy" and it was a bit distracting. It may also just require that you move farther away from the microphone. -Emily L

It was clever to use the student's test scores for your example, it's the kind of example that makes the kids want to pay attention to what you are saying. You might want to tackle the difference between standard deviation and variance etc. in a new video.