# Recent questions tagged random

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Show that $\operatorname{trace}(A B C)=\operatorname{trace}(C A B)=\operatorname{trace}(B C A)$.
Show that $\operatorname{trace}(A B C)=\operatorname{trace}(C A B)=\operatorname{trace}(B C A)$.Let $A, B$, and $C$ be any $n \times n$ matrices. a) Show that $\operatorname{trace}(A B)=\operatorname{trace}(B A)$. b) Show that $\operator ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 What is sampling error? 0 answers 7 views What is sampling error?What is sampling error? ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 What is a control variable? 1 answer 4 views What is a control variable?What is a control variable? ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 What is the difference between confounding variables, independent variables and dependent variables? 1 answer 7 views What is the difference between confounding variables, independent variables and dependent variables?What is the difference between confounding variables, independent variables and dependent variables? ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 What are independent / dependent variables? 1 answer 13 views What are independent / dependent variables?What are independent / dependent variables? ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 Give some useful properties of normally distributed random variables 1 answer 28 views Give some useful properties of normally distributed random variablesGive some useful properties of normally distributed random variables ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 Give an example of a continuous random variable 1 answer 41 views Give an example of a continuous random variableGive an example of a continuous random variable ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 When is X a continuous random variable? 1 answer 41 views When is X a continuous random variable?When is X a continuous random variable? ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 When is a random variable X called discrete? 1 answer 34 views When is a random variable X called discrete?When is a random variable X called discrete? ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 What are independent random variable in statistics? 1 answer 43 views What are independent random variable in statistics?What are independent random variable in statistics? ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 What is a random variable in statistics? 1 answer 32 views What is a random variable in statistics?What is a random variable in statistics? ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 If \(X$ and $Y$ are independent random variables, then $\operatorname{Var}(X+Y)=\operatorname{Var}(X)+\operatorname{Var}(Y)$
If $X$ and $Y$ are independent random variables, then $\operatorname{Var}(X+Y)=\operatorname{Var}(X)+\operatorname{Var}(Y)$If $X$ and $Y$ are independent random variables, then \ \operatorname{Var}(X+Y)=\operatorname{Var}(X)+\operatorname{Var}(Y) \ ...
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Prove that if $X$ is a random variable with mean $E X$ and $c \in$ is $a$ real number, then $\operatorname{Var}(X)=E\left(X^{2}\right)-E(X)$
Prove that if $X$ is a random variable with mean $E X$ and $c \in$ is $a$ real number, then $\operatorname{Var}(X)=E\left(X^{2}\right)-E(X)$Prove that if $X$ is a random variable with mean $E X$ and $c \in$ is $a$ real number, then $\operatorname{Var}(X)=E\left(X^{2}\right)-E(X)$ ...
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Prove that if $X$ is a random variable with mean $E X$ and $c \in$ is $a$ real number, then $\operatorname{Var}(c X)=c^{2} \operatorname{Var}(X)$
Prove that if $X$ is a random variable with mean $E X$ and $c \in$ is $a$ real number, then $\operatorname{Var}(c X)=c^{2} \operatorname{Var}(X)$Prove that if $X$ is a random variable with mean $E X$ and $c \in$ is $a$ real number, then $\operatorname{Var}(c X)=c^{2} \operatorname{Var} ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 Prove that if \(X$ is a random variable with mean $E X$ and $c \in$ is $a$ real number, then $\operatorname{Var}(X) \geq 0$.
Prove that if $X$ is a random variable with mean $E X$ and $c \in$ is $a$ real number, then $\operatorname{Var}(X) \geq 0$.Prove that if $X$ is a random variable with mean $E X$ and $c \in$ is $a$ real number, then $\operatorname{Var}(X) \geq 0$. ...
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Susan has a bag of sweets containing 7 chocolates and 5 toffees. Ahmad has a bag of sweets containing 3 chocolates, 4 toffees and 2 boiled sweets.
Susan has a bag of sweets containing 7 chocolates and 5 toffees. Ahmad has a bag of sweets containing 3 chocolates, 4 toffees and 2 boiled sweets.Susan has a bag of sweets containing 7 chocolates and 5 toffees. Ahmad has a bag of sweets containing 3 chocolates, 4 toffees and 2 boiled sweets. A s ...
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Find the probability that at least 2 of these newspapers are delivered to houses with numbers greater than 14 .
Find the probability that at least 2 of these newspapers are delivered to houses with numbers greater than 14 .The 12 houses on one side of a street are numbered with even numbers starting at 2 and going up to 24. A free newspaper is delivered on Monday to 3 di ...
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What is meant by Non-probability sampling methods?
What is meant by Non-probability sampling methods?What is meant by Non-probability sampling methods? ...
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Define sampling.
Define sampling.Define sampling. ...
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What is a symmetric random variable?
What is a symmetric random variable?What is a symmetric random variable? ...
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State the Hoeffding inequality for bounded independent random variables
State the Hoeffding inequality for bounded independent random variablesState the Hoeffding inequality for bounded independent random variables ...
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When is a random variable stable?
When is a random variable stable?When is a random variable stable? ...
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What is an infinitely divisible random variable?
What is an infinitely divisible random variable?What is an infinitely divisible random variable? ...
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What is a Gumbel random variable?