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

The shape of the chi-square distribution depends upon_________.

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

If any ultimate class frequency is negative the data will be

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

• 6Σd₁ A
• 5Σd¹ B
• 
  
  
  C
• 
  D

(α) = (αB) + ------------------

• (Aβ) A
• (AB) B
• (αβ) C
• (A) D

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

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

The sample size n is reasonably large so that for each cell, the estimated expected frequency must be at least

• 2 A
• 3 B
• 4 C
• 5 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 degree of relationship between the two attributes is called

• regressor A
• correlation B
• regressand C
• association D

A characteristic which varies in quantity from one individual to another is called a________.

• Association A
• Correlation B
• Variable C
• Attribute D

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

• 
  A
• 
  B
• 
  C
• 
  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

Degree of linear relationship between two variables is called

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

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

• 1 A
• 0.5 B
• 0 to ∞ C
• -∞ to +∞ D

The value of chi-square statistic is always _______.

• Negative A
• Non-negative B
• Zero C
• One 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 two attributes A and B are negatively associated if

• 
  A
• 
  B
• 
  C
• 
  D

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

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