Kavita obtained 16,14,18 and 20 marks(out of 25)in maths in weekly test in the month of Jan 2000;then mean marks of Kavita is

18

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16.5

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17

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17.5

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Solution

The correct option is C $17$
No. of test in the month Jan 2000=4
Total Marks obtained in 4 test $= 16 + 14 + 18 + 20 = 68$
$∴ A . M = \frac{\sum x}{n} = \frac{68}{4} = 17$

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Kavita obtained 16,14,18 and 20 marks(out of 25)in maths in weekly test in the month of Jan 2000;then mean marks of Kavita is

The correct option is C 17No. of test in the month Jan 2000=4Total Marks obtained in 4 test=16+14+18+20=68∴A.M=∑xn=684=17

The correct option is C $17$
No. of test in the month Jan 2000=4
Total Marks obtained in 4 test $= 16 + 14 + 18 + 20 = 68$
$∴ A . M = \frac{\sum x}{n} = \frac{68}{4} = 17$