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pearson product-moment correlation coefficient

n.
1.the most commonly used method of computing a correlation coefficient between variables that are linearly related

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    Idiom of the Day

    have the presence of mind to (do something)
    to have the calmness and ability to act sensibly in a difficult situation
    My aunt had the presence of mind to write a will before she passed away.



    1.
    Choose an idiom to replace the expression in the brackets:
    My friend is always (complaining about) the food in the cafeteria.

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