Alright childrens, here's some things you should consider.
IMPORTANT CONCEPTS
1. When grouping, it is important to understand that patterns are more important than details. For example, if you had two tons of fruits, all different kinds, and half of your fruits were rotten... You want to group those and get rid of them. Whether or not it's an apple or an orange can wait, honestly!
2. When measuring how extreme a particular piece of data is, find it's distance from the mean in standard deviations! For example, If there are twenty cars on the road, and the mean speed of the cars is 50 mph with a standard deviation of two mph... Well, let's just say that if one of those cars is flying down the road at 60 mph, that'd be a little extreme! *note: 50-60 with standard deviation of 2 is a 5x(standard deviation) difference! Five standard deviations, in relation to road speed, is too dang fast!
3. REMEMBER! There are two ways to find Standard Deviation! There's a sample version and a population version. The most pronounced difference is that to find the Standard Deviation of a sample, you divide by n-1 instead of n!
Well. Those are a few concepts we should consider for next class. I'd go into more detail, but I'd rather wait until I have a firmer grasp of this unit, I wouldn't want to sabotage any of you folks.
THE NEXT SCRIBE WILL BE PHONG, BECAUSE HE CAN SAVE US ALL.
1 comments:
Daniel I'll do my best to save you guys when you need it =p.
Stay tuned to Niwatori-san's Corner and you'll get it well in my prospective anyways.
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