331MathematicsMedium
If X and Y are independent then SD (X − Y) is________?
AVar(X)+Var(Y)−−−−−−−−−−−−−−−√
BSD(X)−SD(Y)
Correct answer
B. SD(X)−SD(Y)
Explanation
The correct answer is SD(X)−SD(Y).
Correct answer
B. SD(X)−SD(Y)
Explanation
The correct answer is SD(X)−SD(Y).
Statistical Laws are valid in the ________?
The frequency distribution mean > Median > Mode is called ________?
Which of the following divides a group of data into four subgroups?
The word statistics is defined as________?
The Index number are used to measure seasonal and cyclical variations in ________?
A∩B means:________?