ICS Part 2 Statistics Chapter 15 Online Test

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

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

• (B) A
• (α) B
• (β) C
• (A) D

Chi-square curve ranges from:

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

The shape of the chi-square distribution depends upon_________.

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

(α) = (αB) + ------------------

• (Aβ) A
• (AB) B
• (αβ) C
• (A) D

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

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

(AB), (Aβ), (αB), (αβ) are called

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

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

• 
  A
• 
  B
• 
  C
• 
  D

• 6Σd₁ A
• 5Σd¹ B
• 
  
  
  C
• 
  D

The two attributes A and B are ________associated, If (AB) < (A)(B)/n.

• Positively A
• Negatively B
• Zero C
• Symmetrical 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 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

The degree of linear relationship between two variable is called________.

• Dependent A
• Association B
• Positive C
• Correlation D

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

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