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

A relationship where the flow of the data points is best represented by a curve is called_______.

• Linear positive A
• Linear negative B
• Linear relationship C
• Nonlinear relatiobship D

A statistical hypothesis is an assertion or conjecture about the distribution of random variables

• one A
• two B
• one or more C
• three D

A numerical characteristic calculated from sample is called:

• Sample unit A
• Sample design B
• Statistic C
• Parameter D

The two attributes A and B are ________associated, If (AB) < (A)(B)/n.

• Positively A
• Negatively B
• Zero C
• Symmetrical D

The descriptive measures of a population are called_______.

• Census A
• Parameter B
• Statistics C
• Bias 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

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

Confidence intervals which are often used in practice are

• 90% A
• 95% B
• 98% C
• all of these D

In a systematic sampling every ------------ unit is selected

• 1^st A
• last B
• xth C
• normal D

A process of dividing the objects into two mutually exclusive classes of an attribute is called

• classification A
• trichotomy B
• dichotomy C
• association D

The shape of the chi-square distribution depends upon_________.

• Parameters A
• Number of cells B
• Degrees of freedom C
• Standard deviation D

If we reject Ho when Ho is actually true then it is

• type - I error A
• type - II error B
• type - III error C
• type - IV error D

Types of statistical inferences are

• one A
• two B
• three C
• four D

If b_yx = 0.89 and b_xy = 0.75, then r=

• 0.89 A
• 0.28 B
• 0.98 C
• 0.82 D

If Ho: μ <μoand H1:μ <μoand level of significance is=α then Ho will be rejected if

• Z < Z=α A
• Z < Z=α/2 B
• Z < Z 1-α C
• Z < Z1-α/2 D

The hypothesis which we are willing to accept when the null hypothesis is rejected is called

• simple hypothesis A
• composite hypothesis B
• null hypothesis C
• alternative hypothesis D

In moving average method, we cannot find the trend values of some:

• Middle periods A
• End periods B
• Starting periods C
• Between extreme periods D