Question

Find the arithmetic mean of the first 3 positive integers and first 3 negative integers ( do not include 0 )

• A. 3 Mode= Median + 2 Mean
• B. Mode =3 Median - 2 Mean
• C. 3 Mean= Median + 2 Mode
• D. can't say.

Answer 1

The correct option is C

3 Mean= Median + 2 Mode

The first 3 positive integers = 1 , 2 and 3

The first 3 negative integers = -1, -2 and -3

Hence sum of observation = 1 + 2 + 3 + (-1) + (-2) + (-3)

= 0

Mean = $\frac{sumofobservation}{6}$

= $\frac{0}{6}$

= 0