Answer:
B
Explanation:
x=6,8 ,15, 15, 16, ⇒ these are the set of values given
N=5 ⇒this represent the number of set of values given
Find the mean of set of values
Mean=sum of set of values/N
mean= 6+8+15+15+16=60/5 =12
find mean absolute
First find ║x-mean║⇒every set of data subtract the mean value
║x-mean║= 6, 4,3,3,4 ⇒this represents the deviations
sum of ║x-mean║=6+4+3+3+4=20
Finding mean absolute deviation
mean absolute deviation = sum of ║x-mean║÷ N where N is number of data set
N=5
20/5 =4