## The Growth of Televisions - Data Analysis with R

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This video doesn't contain an exhaustive list of everything you
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might have related to exploratory data analysis. But here are
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some of the things that we thought about. If you
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first thing I notice is that Nathan used histograms to
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show the distribution of TV sizes in any given year.
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You can also see that for each year, Nathan included
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a dark line in the middle. Which represents the median size
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television for that year. So in 2005, it looks like
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the median TV size was about 40 inches. So half
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the TVs were larger and half of them were smaller.
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Second, Nathan describes where the data originated. In this case he
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got his data from CNET Reviews. Nathan describes a caveat
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in the source of his data. He mentioned that the
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screen sizes are based on the TVs that were on
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the market at the time and not on how many people
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actually bought them. The average television size that people
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bought could be quite different from the average television size
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on the market. I think the second part is key
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and is something we should remember when approaching any data
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set. We should always be skeptical of what story the
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inspect it and consider its context. Finally, Nathan conducted a
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time series analysis. So each year after 2002, Nathan indicates
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whether the median size of televisions increased
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or whether or not it decreased. In
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the case of the circle, we know that the television size remained the same.
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This leaves me wondering what television sizes are doing now. Maybe you can find
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some data out there and let us know by the end of the course.
Title:
The Growth of Televisions - Data Analysis with R
Video Language:
English
Team:
Udacity
Project:
UD651: Exploratory Data Analysis
Duration:
01:35
 Udacity Robot edited English subtitles for The Growth of Televisions - Data Analysis with R Cogi-Admin edited English subtitles for The Growth of Televisions - Data Analysis with R

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