Statıstıcs I Deneme Sınavı Sorusu #806830
Probability density function for continuous random variable X is defined as follows;
f (x) = 0.05, for 0 ? x ? 30.
Which of the following is the standard deviation of this function?
Probability density function for continuous random variable X is defined as follows;
f (x) = 0.05, for 0 ? x ? 30.
Which of the following is the standard deviation of this function?
|
14,08 |
|
14,06 |
|
14,05 |
|
15,07 |
|
14,03 |
Yanıt Açıklaması:
µ=E(X)= ?xf(x)dx
?2 =V(x)=E(X-µ)2 = ?(x-µ)2 f(x)dx= ?x2 f(x)dx-µ2
The standard deviation of random variable X is a square root of variance= 14.03
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