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    Determining the Correlation Coefficient

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    Calculate the correlation between age and tenure with the company. Explain results. I have worked up the data below, but am not really sure how to correlate it. First, how do I determine which is the predictor and which is the response variable?

    Tenure

    Age <2 yrs 2 to 5 yrs >5 yrs Total
    21 & under 20 26 2 48
    % Total 7% 9% 1% 17% (age mean for 21 and under)

    22 to 49 121 37 36 194
    % Total 42% 13% 13% 68% (age mean for 22 - 49)

    50 & over 29 5 12 46
    % Total 10% 2% 4% 16% (age mean for 50 and over)

    170 68 50 288
    % Total 59% 24% 18% 101% (rounded up)

    59% = tenure mean for < 2 yrs
    24% = tenure mean for 2 to 5 yrs
    18% = tenure mean for >5 yrs

    Do I add up the means for each age and tenure and the average it? And work up the Std deviations from there?

    See attachment.

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