Word Count : 292

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दिए गए आँकड़े: | X (विज्ञापन) | 2 | 4 | 6 | 8 | 10 | | ------------ | -- | -- | -- | -- | -- | | Y (विक्रय) | 20 | 25 | 29 | 34 | 40 | सर्वप्रथम आवश्यक सारणी बनाते हैं: | X | Y | X² | XY | | -- | -- | --- | --- | | 2 | 20 | 4 _______ _____ ____ __________ ______ ________ _____ ____ __________.
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