Business Statistics

Calculate coefficient of variation of a distribution, when mean=40 and standard deviation = 11.

Find quartile coefficient of skewness, when median = 40, lower quartile = 33 and upper quartile = 45.

Twenty balls are numbered from 1 to 20. If one ball is drawn at random, what is the probability that the ball drawn is multiple of 4 or 7?

Calculate the coefficient of kurtosis, when first quartile= 25, third quartile= 40, 10th percentile= 10 and 90th percentile= 63.

Calculate regression coefficient of Y on X, if correlation coefficient between X and Y= 0.60, standard deviation X series= 7 and standard deviation of Y series= 9.

Find the simple aggregative price index number for the year 2023 from the following information:

List out the any four random sampling techniques.

Find the value of following determinant: $\begin{vmatrix} 1 & a & b+c \\ 1 & b & c+a \\ 1 & c & a+b \end{vmatrix}$

Find 3(A+B) where A = $\begin{bmatrix} 1 & 9 \\ 4 & 1 \\ 3 & 7 \end{bmatrix}$ and B = $\begin{bmatrix} 2 & 6 \\ 3 & 3 \\ 1 & 4 \end{bmatrix}$.

From the given Pay-off table, give the decision according to (i) Maximax approach (ii) Maximin approach.