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What is the standardizing variables?
There doesn't exist such a thing. What does exist are standardized variables, which are variables with mean = 0 and standard deviation = 1
What determines how close a measurement is to the true or accepted value?
This value is variable and different for each type of measurement. The error can be absolute or relative. A measurement without any error doesn't exist.
What are some relationships that exist between variables?
Causation, correlation...
Illusory correlation refers to?
the perception of a relationship between two variables that does not actually exist.
Why do decimeters exist when we use centimeters instead?
That is the benefit of the International SI units of measurement, being base 10 one can convert to a measurement appropriate to what you are doing by simply multiplying or dividing by 10 - thus while the standard measurement is the meter, kilometers, decimeters and centimeters are all the SAME thing just expressed as a different magnitude
