Business Statistics

Calculate the coefficient of variation of a distribution, if mean is found to be 200 and variance of distribution is 36.

The Karl Pearson's coefficient of skewness is 0.5 if mean = 45 and standard deviation = 15, find the value of mode.

If P(A) = 0.6, P(B) = 0.5 and P(A \cup B) = 0.4 find P(A \cap B). Where A and B are not mutually exclusive events.

Find the coefficient of quartile deviation of a distribution when upper and lower quartiles are 90 and 55 respectively.

Calculate coefficient of correlation (r), if $b_{yx} = -0.57$ and $b_{xy} = -0.82$ respectively.

Find the simple aggregative price index number from the following data:

Find the value of determinant $\begin{vmatrix} 3 & 2 & 1 \\ 2 & 3 & 5 \\ 3 & 5 & 1 \end{vmatrix}$

Find $\frac{1}{3}(A - B)$ where A = $\begin{bmatrix} 8 & 9 \\ 9 & 10 \\ 2 & 5 \end{bmatrix}$ and B = $\begin{bmatrix} 5 & 6 \\ 3 & 4 \\ 8 & 5 \end{bmatrix}$

The following table shows the average daily wages of workers in city A and B, find the combined average wage of the workers.

Define the qualitative classification of data with a suitable example.