Regression analysis is a statistical technique used to find relationships between variables in order to predict future values. "Normal probability analysis" probably refers to the concept of "normal distribution," since there is no such thing as "normal probability analysis." A normal distribution in statistics is a frequency distribution that is in the shape of a classic bell curve. Learning curve analysis is be used to analyze reductions in the time required to perform a task as experience with that task increases. Sensitivity analysis is used to determine how an expected result can be expected to change if factors that were involved in predicting the result change.
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