For the frequency distribution :
Variate (x) : x₁ x₂ x₃
.... x₁₅
Frequency (f) : f₁
f₂
f₃
...... f₁₅
where 0 < x₁
< x₂
< x₃
< ... < x₁₅ = 10 and
> 0, the standard deviation cannot be :
JEE Main 2020 · 3 Sep, Morning shift · Q5460