Dan_Keys comments on Independent re-analysis of MFA veg ads RCT data - Effective Altruism Forum

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Comment author: Dan_Keys 20 February 2016 06:50:27AM 2 points [-]

I can't tell what's being done in that calculation.

I'm getting a p-value of 0.108 from a Pearson chi-square test (with cell values 55, 809; 78, 856). A chi-square test and a two-tailed t-test should give very similar results with these data, so I agree with Michael that it looks like your p=0.053 comes from a one-tailed test.

Comment author: Jeff_Kaufman 20 February 2016 02:46:41PM *  1 point [-]

Yes, you're right. Sorry! I redid it computationally and also got 0.108. Post updated.