The mean can be one of the numbers in a data.
1}True
2}False

it can be true but ... not all times...

Solution

The given statement is  True

Since mean is may be or may not be one of the numbers in a data

Step-by-step explanation:

Please see in addition :

Tell whether the statement is true or false:

(i) The mode is always one of the numbers in data.

(ii) The mean is one of the numbers in data.

(iii) The median is always one of the numbers in data.

(iv) The data 6, 4, 3, 8, 9, 12, 13, 9 has mean 9.

Solution:

i) True

ii) False

iii) True

iv) False

(a) the volume of the cone is 20/3 in3

hence, option a is correct.