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

The value of chi-square statistic is always _______.

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

The descriptive measure on the sample observation is called ------------------

• parameter A
• statistic B
• error C
• true value D

• 37 A
• 132 B
• 32 C
• cannot be calculated D

The degree of relationship between the two attributes is called_______.

• Association A
• Correlation B
• Contingency C
• Quantitative D

If the value of any regression coefficient is zero, then two variable are _______.

• Qualitative A
• Correlation B
• Dependent C
• Independent D

Which error is occurred when the defendant were found guilty if, infect the defendant is innocent

• type-I A
• type-II B
• no error C
• both a and b D

The following statistic are unbiased estimators:

• The Sample mean A
• S² = Σ(X - X)²/n-1 B
• The sample proportion C
• All the above D

All odd ordered moments about mean are ______ in a normal distribution.

• Zero A
• Unity B
• Positive C
• Negative D

The graph of a time series is called

• histogram A
• polygon B
• straight line C
• historigram D

The alternative hypothesis always contains the sign of

• equality A
• inequality B
• ratio C
• proportion D

For a least squares linear trend Y = a + bx, the Σ(Y - Y)² = 0 when:

• All the Y-values are positive A
• All the Y-values lie on the line B
• All the Y-values lie above the line C
• None of these D

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

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

Another name of probability sampling is________ sampling.

• Random A
• Non-random B
• Error C
• Bias D

A set of points in a rectangular coordinate system, where each point represents an observed pair of values is called

• least square regression A
• scatter diagram B
• pie graph C
• regression coefficient D

If any ultimate class frequency is negative the data will be

• inconsistent A
• consistent B
• correlated C
• composite D

The mean deviation (M.D) of a normal distribution is ________.

• 4/5 σ A
• 5/4 σ B
• 2/3 σ C
• None of these D

If mean of the sampling distribution is equal to the parameter then the estimator will be

• biased A
• consistent B
• sufficient C
• unbiased D