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Management · all questions

Business Statistics
practice.

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Q261

Open question
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.

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Q262

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

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Q263

Open question
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 ?

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Q264

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

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Q265

Open question
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.
d. Standard deviation of poisson distribution 4.

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Q266

Open question
Correlation means

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Q267

Open question
MIS can be used in controlling

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Q268

Open question
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.

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Q269

Open question
Given
N = 8, = 74.5, Ax = 69.0, σx = 13.07, = 125.5, Ay = 112, σy = 15.85, dxdy = 2176.
Find out correlation

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Q270

Open question
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?

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Q271

Open question
Which of the following statements relating to correlation and reegression are true?
1. The coefficient of correlation is independent of change of origin and scale
2. The coefficient of correlation between the two variables is the arithmetic average of the two regression coefficients
3. The probable error of the coefficient correlation is 0.6745 times of its standard error
4. Coefficient of correlation multiplied by the ratio between the standard deviations of the two variables denotes the slope of the regression line
Select the correct answer:

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Q272

Open question
X12 and X22 are independently distributed with n1 and n2 d.f. then (X12/n1)/(X22/n2) is distributed as

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Q273

Open question
Under binomial distribution, can be computed by

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Q274

Open question
The quality of the parameters is assured if

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Q275

Open question
Standard deviation can be calculated by

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Q276

Open question
The information system development cycle for a new application consists of the

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Q277

Open question
Statement I When a null hypothesis is true but as per the hypothesis testing, it is rejected; it is known as Type II error in hypothesis testing.
Statement II For testing the significance of the differences among the performance of more than two sample groups when the data are non-parametric, Kruskal-Wallis (H) test is appropriate.

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Q278

Open question
ERP Model is/are

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Q279

Open question
Statement I The mean of the sampling distribution of mean is equal to the parameter value of the population mean.
Statement II Stratified sampling technique is unrestricted probability (random) sampling technique.

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Q280

Open question
Which one of the following statement is correct?

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