Answer:
a) True
Step-by-step explanation:
The given statement is true.
where 
are data points, 
is the mean and n is the number of observations.
The standard deviation express the variation of data from the mean and therefore, have the same unit as the data like lbs, inches, dollars, etc.
Coefficient of variation on the other hand is the ratio of standard deviation and mean. It is also a measure of dispersion but since it is a ratio, the units cancel each other.
Thus, coefficient of variation is dimensionless.
Thus, it is a relative measure.
Answer:
the answer are a d and e
Step-by-step explanation:
2 stars and 3 points
12 stars and 18 points
4 stars and 5 points
The first picture represents the elements in B that are not (also) in A. So, we want the set difference of B and A:
For the second picture, we can work like this: if we take all the elements belonging to A, we only need to add the bottom-right part, which is the intersection of B and C. So, we can express the blue part as
Answer:
sss
Step-by-step explanation:
Answer:
The answer is X=3/4 or -1/2
