The mean of n items is . If the first term is increased by 1, second by 2 and so on, then new mean is
None of these
As we discussed in concept
ARITHMETIC Mean -
For the values x1, x2, ....xn of the variant x the arithmetic mean is given by
in case of discrete data.
-
Let no are
Now she sum is
=
=
=>
New mean =
=
Option 1)
This option is incorrect.
Option 2)
This option is incorrect.
Option 3)
This option is correct.
Option 4)
None of these
This option is incorrect.