11
Given2 x = 215, $$\sum $$d2 y = 163.
A)
+0.72
B)
+0.99
C)
+0.96
D)
+0.90
Answer & Solution
Answer: Option
B
12
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
Answer & Solution
Answer: Option
B
13
If μ is equal to 25 then value of mean for exponential probability distribution is
A)
0.04
B)
0.07
C)
0.08
D)
0.4
Answer & Solution
Answer: Option
A
14
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
Answer & Solution
Answer: Option
D
15
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%
Answer & Solution
Answer: Option
D
16
Standard error of mean is computed by
A)
$$\frac{{{\text{Sample}}}}{{\sqrt {N - 1} }}$$
B)
$$\frac{{{\text{SD of sample}}}}{{\sqrt {{\text{Sample size}}} }}$$
C)
$$\frac{N}{{\sqrt {\sigma - 1} }}$$
D)
$$\frac{{N - 1}}{{\sqrt \sigma }}$$
Answer & Solution
Answer: Option
B
17
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
Answer & Solution
Answer: Option
A
18
Given,
This is a
A)
poisson distribution
B)
binomial distribution
C)
normal distribution
D)
exponential distribution
Answer & Solution
Answer: Option
B
19
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
Answer & Solution
Answer: Option
A
20
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
Answer & Solution
Answer: Option
B
