In the figure,what represents a saddle joint? 
Definitions:
Possibility of Error
The probability that a statistical inference or decision made might be incorrect due to the limitations of sampling or experimental design.
Statistical Significance
The probability that an observed difference or relationship exists in a population, not just in the sample studied.
Hypothesized Reason
A suggested theory developed from minimal evidence intended to serve as a foundation for additional research.
Statistical Significance
A determination that a relationship between variables is not likely to be due to chance at a specified level of probability.
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