Ted Talk -- 三种方式检查不好的数据

3 ways to spot a bad statistic

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3 ways to spot a bad statistic:

1. Can you see the uncertainty? -- Though the US unemployment data can be collected from the government rather than the private company to increase the approximation, it is hard to get the accurate number in the enormous population. The uncertainty can be made by several factors, such as unauthorized resident, temporary resident, and etc.

2. What do we see from the data? -- In statistic, we see the data from these numbers: average, mean, variance ...

data

3. How is the data collect? -- number, region, purpose for data, if the independent variable associated with dependent variable

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