Question
For the production data
>Year: 1 2 3 4 5 6 Production: 25 95 55 94 25 75 the third 3-year simple moving average is:Solution
The correct answer is D
A random sample of size 225 is drawn from the population of mean μ and standard deviation σ. The sample mean follows the distribution with mean 100 a...
If mean and mode of the distribution is 32 and 21, then the distribution:
If each observation in a data set for number of employees in different divisions is doubled then the coefficient of quartile deviation:
If price-quantity are related for base year (0) and current year (1) are
∑ : p0q0 = 260,∑ : p1q0 = 395,∑ : p0q1 = 264,∑ : p1q1 = 422, t...
The following observations 14, 19, 17, 20, 25 constitute a random sample from an unknown population with mean u and standard deviation σ.
The...
For a normal distribution, which of the following is true?
28 If r ₁₂ = +0.80, r13 = -0.40 and r23 = -0.56, then the square of multiple correlation coefficient (correct to four decimal places) R2...
If mean and median of the distribution are 12 and 21, then the distribution
