Question

avg of 15 numbers is 2 if each number is multiplied by 5,what is the new average ​

Answer 1

Step-by-step explanation:

if all the no. are multiply by 5 then it's averages is also multiple by 5

then new average is 2×5

new average is10

Answer 2

Answer:8

Step-by-step explanation:

Given that the mean of 15 numbers is 2

i.e n=15

mean =2

we know

Mean = sum of numbers/No. of numbers(observations)

2= sum of numbers/15

Sum of numbers =15×2=30

and if each number is multiplied by 4.

After the multiplication of each number, their new sum of numbers will be

=30×4

=120

∴ new mean = new sum of numbers/no. of numbers(observations)

= 120/15

=8

∴ new mean =8

#SPJ2