Are polls showing a genuine Yes bounceback or just random variation?

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The National
Are polls showing a genuine Yes bounceback or just random variation?

FIFTY-TWO per cent support for independence in the new BMG poll, following on from 51% in the recent Opinium poll, is consistent with two competing interpretations of the direction of travel. It’s possible that public opinion has remained stable at around 50-50 for several weeks and that the Yes camp have random sampling variation to thank for being slightly ahead in the two newest polls. But it’s also conceivable that we’re seeing early signs that the Yes vote is genuinely…

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The National
Are polls showing a genuine Yes bounceback or just random variation?