2nd Year Statistics Chapter 15 Online MCQ Test for 12th Class Statistics Chapter 15 (Association)

When the expected frequencies are very small the value of=χ2has been

• adjusted A
• omitted B
• changed C
• all of these D

The shape of the chi-square distribution depends upon_________.

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

The value of chi-square statistic is always _______.

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

A characteristic which varies in quality form one individual to another is called

• variable A
• constant B
• attribute C
• none of these D

The total area under the curve of chi-square distribution is_______.

• 1 A
• 0.5 B
• 0 to ∞ C
• -∞ to +∞ 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

The degree of relationship between the two attributes is called_______.

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

Chi-square curve ranges from:

• -∞ to +∞ A
• 0 to ∞ B
• -∞ to 0 C
• 0 to 1 D

For an r x c contingency table, the number of degrees of freedom are equal to:

• rc A
• r + c B
• (r-1)+(c-1) C
• (r-1)(c-1) D

If two attributes A and B are independent, then co-efficient of association is______.

• -1 A
• +1 B
• 0 C
• 0.5 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

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

If (AB) = (A)(B)/n, the two attributes. A and B are _________.

• Independent A
• Dependent B
• Correlated C
• Quantitative D

• Φ² A
• q² B
• α² C
• β² D

If 6Σd²/n(n² - 1) is zero, the value of r_s is ________.

• 0.5 A
• 1 B
• -1 C
• 0 D

Degree of linear relationship between two variables is called

• regression A
• association B
• correlation C
• disassociation D

(AB), (Aβ), (αB), (αβ) are called

• positive class frequencies A
• negative class frequencies B
• natural class frequencies C
• ultimate class frequencies D