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. The following table provides the distribution of items according to size groups and also the number of defectives:Size group: 9-11 11-13 13-15 15-17 17-19No. of items: 250 350 400 300 150No. of defective items: 25 70 60 45 20The correlation coefficient between size and defectives is(a) 0.25 (b) 0.12(c) 0.14 (d) 0.07​

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