630StatisticsMedium
If a & b are constants, then Var (a + bX) equal to________?
Ab Var(x)
Bb2 Var(X)
CNone of these
DVar(bX) + a
Correct answer
B. b2 Var(X)
Explanation
The correct answer is b2 Var(X).
Correct answer
B. b2 Var(X)
Explanation
The correct answer is b2 Var(X).
Data which is not arranged in ascending or descending order is called ________?
The data which have already been collected by some one are called________?
Frequency table is an arrangement of data by classes together with their ________ class frequencies?
The formula ∑poqn/∑poqo x100 is used to calculate________?
According to the empirical rule, approximately what percent of the data should lie within μ±σ?
When the word random variable use in statistics it must have?