Answer:( c ) 1.414
Step-by-step explanation:
Let m be mean
M=mean=sum/n
M= (16+19+18+17+20+18) / 6
M=108/6
M=18
Let start finding:
The standard deviation formula is= sqrt( Summation of |x-m|^2 / n-1)
|x-m|^2
For 1st: |16-18|^2=4
For 2nd: |19-18|^2=1
For 3rd: |18-18|^2=0
For 4th: |17-18|^2=1
For 5th: |20-18|^2=4
For 6th: |18-18|^2=0
Summation of |x-m|^2 =10
The standard deviation formula is :
S.D = sqrt( Summation of |x-m|^2 / n-1)
S.D= sqrt(10 / 5)
S.D=sqrt(2)
S.D= 1.414
P11,p7 ?
I dont really understand what that is so.
A is a function
To represent a function each value from the input (x ) can only map to exactly one value in the output (y)
In B
x = 3 → y = 10/ 30 ← 2 values of y
In C
x = - 5 → y = 2/ 3 ← 2 values of y
x = - 10 → y = 4/ 5 ← 2 values of y
In D
x = 20 → y = 25/ 35 ← 2 values of y
A is the only table where each value of x maps to exactly one value in y
Answer:
C
Step-by-step explanation:
When reflecting around the x axis, the x value stays the same and the y- will change.
