The standard error of the estimate increased by decreasing

• population A
• sample size B
• errors C
• precision D

Which of the following is not composite hypothesis?

• ^{μ < μ}_^ A
• μ > μ₀ B
• μ = μ_o C

In the measurement of secular trend the moving averages

• give the trend in a straight line A
• measure the seasonal variations B
• smoothes out a time series C
• measure irregular fluctuations D

Regression line x on y is

• 
  A
• 
  B
• 
  C
• 
  D

Hypothesis that does not completely specify the underlying population distribution is called

• simple hypothesis A
• dual hypothesis B
• composite hypothesis C
• common hypothesis D

RAM is called_______storage.

• Primary A
• Secondary B
• Control C
• Scanner D

Screen output is considered as a _________.

• Hardcopy A
• Softcopy B
• Input C
• Software D

The normal distribution is represented as_______

• N (μ,σ²) A
• N (n,p) B
• N (0,σ²) C
• None of these D

By increasing the sample size, the precision of confidence interval is:

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

The value of chi-square statistic is always _______.

• Negative A
• Non-negative B
• Zero C
• One D

The measures of strength of closeness of linear relationship between two variables is called

• simple linear regression A
• composite linear regression B
• simple linear correlation C
• composite linear correlation D

The alternative hypothesis is also called:

• Null hypothesis A
• Statistical hypothesis B
• Research hypothesis C
• Simple hypothesis D

If Ho:π >πo , H1:π <πo and level of significance is=α then Ho will be rejected if

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

In case of normal distribution maximum value of ordinate is

• μ A
• Zero B
• 
  C
• 
  D

The value of coefficient of association lies between

• 0 and + 1 A
• -1 and + 1 B
• -1 and 0 C
• -0.5 and + 0.5 D

A process by which we estimate the value of dependent variable on the basis of one or more independent variable is called_________.

• Residual A
• Correlation B
• Regression C
• Slope D

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