Often, variability is most usefully expressed in the same units as the original data. That's what <em>standard deviation</em> (square root of variance) does. In situations where that is the case, the variance is useful only for getting to the value of standard deviation.
Answer:
n-1
Step-by-step explanation:
Consecutive means that they have a difference of one, so the expression will be n-1.
Answer:
im pretty sure its 6 hope i helped
Answer:
The simplified form is
.
Step-by-step explanation:
Given : Expression 
To find : The simplified expression ?
Solution :
Expression 
Multiply 3 both side,


Therefore, the simplified form is
.
The graph is an open circle at -1 with the line going towards the positive numbers.