12th Class Statistics MCQ Test With Answer for Statistics Full Book

Arithmetic operations are carried out by_______ units:

• CPU A
• RAM B
• ALU C
• ROM D

• independent A
• positively associated B
• negatively associated C
• correlated D

The critical region of=χ2distribution is

• χ2 <χ2v; 1-α A
• χ2 <χ2v;1-α B
• χ2 <χ2 v;1-α/2 C
• χ2 <χ2v;1-α/2 D

100(1-α)% confidence interval for population proportion of success,&=nbsp;π is

• P (L <μ < U) = 1 - α A
• P (L <σ < U) = 1 - α B
• P (L <π< U) = 1 - α C
• P (L <P&=nbsp;< U) = 1 - α D

P(type II error) is equal to:

• α A
• β B
• 1 - α C
• 1 - β D

If X - N (50,25), then=σ = ________.

• 3 A
• 5 B
• 25 C
• 50 D

Screen output is considered as a

• softcopy A
• hardcopy B
• screen copy C
• print copy D

The Level of ------------- of test is the maximum probability with which we are willing to a risk of type -I error

• correction A
• error B
• significance C
• statistics D

Total probability under the normal curve is

• 1 A
• 0 B
• -1 C
• ∞ D

For a 3 x 3 contingency table, the number of cells in the table are _________.

• 3 A
• 4 B
• 6 C
• 9 D

1 -&=nbsp;α is call:

• Confidence coefficient A
• Power of the test B
• Size of the test C
• Level of significance D

If (1-α) is increased, the with of a confidence interval is:

• Decreased A
• Increased B
• Constant C
• Same D

The equation of the quadratic (parabolic) trend is

• ŷ=a+bx A
• ŷ=a+by B
• ŷ=a+bΣx+cΣx² C
• ŷ=a+bx+cx² D

An estimator is ------------ if its expected value is equal to the population parameter to be estimated

• bad A
• biased B
• unbiased C
• none of these D

A part of the population is called

• parameter A
• statistic B
• sample C
• both b and c D

If sampling is done without replacement then no

• Nⁿ A
• ^NC_n B
• ^Np_" C
• N x N D

If two attributes A and B have perfect positive association value of the coefficient of association is equal to _______.

• +1 A
• -1 B
• 0 C
• (r-1)(c-1) D