Statistics MCQs
Topic Notes: Statistics
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
1
In an r x c contingency table used for a test of independence, what is the formula for the degrees of freedom?
Answer:
(r -1) (c -1)
The degrees of freedom for a chi-square test of independence in an r x c contingency table is calculated as (number of rows - 1) multiplied by (number of columns - 1). This formula accounts for the constraints imposed by the row and column totals, which must sum to the overall sample size, thereby reducing the number of independent cells in the table.