Question

3. The average of 20 values is 18. If 3 is
subtracted from each of the values, then
the new average will be
TINY 20171​

Answer 1

Answer:

New Average = 15

Step-by-step explanation:

20 Values --- Average 18

Average of 20 value = (Total of 20 Values ) / 20

That means total of 20 values = Average of 20 values X 20

= 18 X 20 = 360

Now Substracting 3 from each value

That means

Total of 20 values where 3 substracted from each =Total of 20 values - 3(20)

= 360 -60 = 300

New Average = 300 / 20 = 15

Answer 2

Answer:

New Average = 300/20 =15