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Tera question ma answer kerna ke liya space nai hai priya |
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Answer» Answer: The GIVEN mean of 10 NUMBERS = 15 So, Mean of 10 numbers = sum of observations/ no. of observations 15 = sum of observations / 10 Sum of observations of 10 numbers = 150 Similarly, Mean of 20 numbers = sum of observations/ no. of observations 11 = sum of observations / 20 Sum of observations of 20 numbers = 220 Hence, Mean of 32 numbers = (sum 10 numbers+sum of 20 numbers +sum of last TWO numbers)/ no. of observations Mean of 32 numbers = (150 +220 + 20 ) / 32 = 390 /32 = 12.188 |
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