MCQ

MCQ 11 Mark

If the function $f(x)$ is increasing at $x=a$, then which is the correct option from the following?

A
$f^{\prime}(a)<0$
✓
$f^{\prime}($ a) $>0$
C
$f^{\prime}( a )=0$
D
$f^{\prime \prime}$ (a) $>0$

Answer

Correct option: B.

$f^{\prime}($ a) $>0$

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MCQ 21 Mark

What is the value of $\lim _{x \rightarrow 4} \sqrt{4 x+9}$ ?

✓
$5$
B
$25$
C
$\frac{7}{4}$
D
$7$

Answer

Correct option: A.

$5$

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MCQ 31 Mark

Which of the following is approximate value of mean deviation for normal variable?

✓
$\frac{4}{5} \sigma$
B
$\frac{4}{5} \mu$
C
$\frac{2}{3} \sigma$
D
$\frac{2}{3} \mu$

Answer

Correct option: A.

$\frac{4}{5} \sigma$

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MCQ 41 Mark

What is the total area under normal curve among the following?

A
$-1$
B
$0$
✓
$1$
D
$0.5$

Answer

Correct option: C.

$1$

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MCQ 51 Mark

For a symmetrical binomial distribution with $n=10$, which of the following values might be the value of mean?

✓
$5$
B
$3$
C
$9$
D
$7$

Answer

Correct option: A.

$5$

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MCQ 61 Mark

Two cvents $A$ and $B$ of a sample space are mutually exclusive. Which of the following will be equal to $P(B-A)$ ?

A
$P ( A )$
✓
$P ( B )$
C
$P ( A \cap B )$
D
$P(A \cup B)$

Answer

Correct option: B.

$P ( B )$

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MCQ 71 Mark

Which method of finding trend is the best to eliminate the effect of repetitive short-term variations?

A
Graphical method
B
Method of least squares
C
Karl Pcarson's method
✓
Method of moving average

Answer

Correct option: D.

Method of moving average

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MCQ 81 Mark

What is the value of $b_{y x}$ if the regression line of $Y$ on $X$ is $2 x+3 y-50=0$ ?

A
$\frac{3}{2}$
B
$-\frac{3}{2}$
✓
$-\frac{2}{3}$
D
$2$

Answer

Correct option: C.

$-\frac{2}{3}$

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MCQ 91 Mark

Which kind of the correlation can be obtained if the two variables are varying in opposite direction in constant proportion?

A
Partial Positive Correlation
✓
Perfect Negative Correlation
C
Perfect Positive Correlation
D
Partial Negative Correlation

Answer

Correct option: B.

Perfect Negative Correlation

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MCQ 101 Mark

Which average is considered as the best average in construction of the index number?

A
Harmonic mean
B
Arithmetic mean
C
Weighted mean
✓
Geometric mean

Answer

Correct option: D.

Geometric mean

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Statistics MCQ

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