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

(α) = (αB) + ------------------

• (Aβ) A
• (AB) B
• (αβ) C
• (A) D

n = (A) + --------------------

• (B) A
• (α) B
• (β) C
• (A) 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 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

The degree of relationship between the two attributes is called_______.

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

Degree of linear relationship between two variables is called

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

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

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

• 6Σd₁ A
• 5Σd¹ B
• 
  
  
  C
• 
  D

C= ------------------------------

• 
  A
• 
  B
• 
  C
• 
  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

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

The value of chi-square statistic is always _______.

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

A characteristic which varies in quality from one individual to another is called an_______.

• Variable A
• Attribute B
• Associated C
• Independent D

(AB), (Aβ), (αB), (αβ) are called

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

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

• 0.5 A
• 1 B
• -1 C
• 0 D

The two attribute A and B are positively associated, if _________.

• (AB) = (A)(B)/n A
• (AB) < (A)(B)/n B
• (AB) ≠ (A)(B)/n C
• (AB) > (A)(B)/n D