If a sample has '$n$' observation $x_1, x_2 ..... x_n$ with '$m$' constraints on these values then degree of freedom of sample statistic is:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → $n-m$ **
Degree of freedom represents the number of independent observations available.
If there are $n$ observations but $m$ constraints linking them, then only $n-m$ observations are free to vary.