A data set of n observations has mean  2\overset { - }{ x } while another data set of  2n observations has mean 

### Question Asked by a Student from EXXAMM.com Team

Q 3023301241.     A data set of n observations has mean  2\overset { - }{ x } while another data set of  2n observations has mean  \overset { - }{ x }. The mean of the combined data set of  3n observations will be equal to:
A

\overset { - }{ x }

B

\frac { 3 }{ 2 } \overset { - }{ x }

C

\frac { 2 }{ 3 } \overset { - }{ x }

D

\frac { 4 }{ 3 } \overset { - }{ x }`

#### HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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