Mark the incorrect statement
A. High degree of correlation 0.75 < r < 1
B. Moderate 0.25 < r < 0.75
C. Low degree of correlation 0 < r < 0.25
D. None of the above
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Match the following
List-I (Moments)
List-II (Constants of Binomial Distribution)
a. μ1
1. 0
b. μ2
2. 3n2 p2 q2 + npq (1 - 6pq)
c. μ3
3. npq (q - p)
d. μ4
4. (npq)
A. a-1, b-2, c-3, d-4
B. a-1, b-4, c-3, d-2
C. a-3, b-1, c-2, d-4
D. a-4, b-1, c-3, d-2
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What is the probability of getting all the heads in four throws of a coin?
A. 13 1
B. 16 12
C. 16 11
D. 16 1
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The mean wage of a certain group of workers is 500 rupees and s is 100. Find what percentage of workers get above 375 rupees
A. 39.12%
B. 89.44%
C. 80.43%
D. 16.12%
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System analysis helps in
A. Evaluating the system for computerisation and its placement in the total MIS
B. Understanding the objectives achieved by the existing system
C. Both A and B
D. None of the above
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The probability of a bomb hitting a target is 1 /5 . Two bombs are enough to destroy a bridge. If six bombs are aimed at the bridge, find the probability that the bridge is de stroyed
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While correlation analysis tests the . . . . . . . . with which two or more phenomena covary, regression analysis measures the nature and extent of this relation, this enabling as to make prediction.
A. Closeness
B. Validity
C. Realisation
D. Separation
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Which of the following features must be kept in mind while formulating questionnaire?
A. Pilot testing
B. Deciding between unstructured and structured questions
C. Defining target population
D. All of the above
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The features of LAN consist
A. A departmental integrity and implementation of the critical application
B. A customised application environment
C. A multiuser cost effective environment
D. All of the above
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Degree of correlation includes
A. perfect correlation
B. absence of correlation
C. limited degree of correlation
D. all of the above
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Given
∑ dxdy = 186, ∑ dx = 11, ∑ dy = 7, N = 10, ∑ d2 x = 215, ∑ d2 y = 163.
Find out correlation
A. +0.72
B. +0.99
C. +0.96
D. +0.90
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Regression equation of x on y can be
A. y = a + bx
B. x = a + by
C. y = a + bx2 + cx
D. x = a + b
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If μ is equal to 25 then value of mean for exponential probability distribution is
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Which one of the following statement is true?
A. If one of the regression coefficient is greater than one, the other must also be greater than one
B. The product of the two regression coefficient is always more than one
C. Correlation coefficient is the arithmetic mean of the two regression coefficients
D. The signs of the two regression coefficients are always the same
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In a random sample of 100 people, 40% of them are non-vegetarian. What proportion of the whole population is non-vegetarian?
A. 54.30%
B. 36.9 to 37.9%
C. 30.60%
D. 54.7% to 25.3%
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Standard error of mean is computed by
A. B. Sample size SD of sample C. D. Select an option to see the answer and solution.
The following two statements relate to probability distributions. Choose the correct statements being correct or incorrect.
Statement I When 'p' and 'q' are equal in the binomial distribution, the shape of the distribution is perfectly symmetrical irrespective
of the size of 'n'.
Statement II The mean and the variance of poisson distribution are not equal.
A. Statement I is correct, but Statement II is incorrect
B. Statement II is correct, but Statement I is incorrect
C. Both statements are correct
D. Both statements are incorrect
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Given,
This is a
A. poisson distribution
B. binomial distribution
C. normal distribution
D. exponential distribution
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The difficulties with errors may be overcome by
A. Internal and external auditing
B. External control to detect errors
C. Negligible of 'confidence limits' to data
D. Non use of user instruction in measurement and processing procedures
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The probability that a college student will be graduate is 0.4. What will be the probability that out of 5 students none will graduate?
A. 0.0331
B. 0.0777
C. 0.0326
D. 0.333
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