Business Statistics

Match the following

List-I (Phases of decision making process)	List-II (Explanation)
a. Intelligence	1. Inventing, developing, and analyzing possible courses of action. This involves processes to understand the problem, to generate solutions, and to test solutions for feasibility.
b. Design	2. Selecting an alternative or course of action from those available. A choice is made and implemented.
c. Choice	3. Searching the environment for conditions calling for decisions. Data inputs are obtained, processed, and examined for clues that may identify problems or opportunities.

Classifications done on the basis of attributes blindness and region are known as

If your score in an exam was 80, with a mean of 60, what would be the standardised score for this exam if the standard deviation is 15 ?

Suppose I discover that as I eat more vegetables, my body weight decreases. I have demonstrated

Match the following.

List-I (Theoretical Distribution)	List-II (Formula)
a. Mean of binomial distribution	1. np
b. Mean of poisson distribution	2. m
c. Standard deviation of binomial distribution	3. $$\sqrt {{\text{npq}}} $$
d. Standard deviation of poisson distribution	4. $$\sqrt {\text{m}} $$

Correlation means

MIS can be used in controlling

Which of the following statements are correct?
1. Correlation analysis helps in determining the relationship between two or more variables. It does not tell us anything about the cause and effect relationship.
2. The ratio of explained variation to the total variation is called the coefficient of correlation.
3. Pearsonian coefficient always assumes linear relationship, and is unduly effected by the extreme items.

Given
N = 8, $$\overline X $$ = 74.5, A_x = 69.0, σ_x = 13.07, $$\overline Y $$ = 125.5, A_y = 112, σ_y = 15.85, $$\sum $$dxdy = 2176.
Find out correlation

Eight coins are tossed together and the occurrence of a head is termed a success. Write down the Binomial distribution of probabilities for the occurrence of 0, 1, 2 . . . . 8 heads. What is the arithmetic mean and what is the variance of this distribution?