MHB Discrete or Continuous: 4 Random Variables

Missy1
Messages
1
Reaction score
0
Classify the following as discrete or continuous random variables.

(A) The number of people in India
(B) The time it takes to overhaul an engine
(C) The blood pressures of patients admitted to a hospital in one day
(D) The length of a centipede
 
Mathematics news on Phys.org
Missy said:
Classify the following as discrete or continuous random variables.

(A) The number of people in India
(B) The time it takes to overhaul an engine
(C) The blood pressures of patients admitted to a hospital in one day
(D) The length of a centipede


A discrete random variable is one that can take values from a discrete set (one where each value is some how separated from its neighbours).

A continuous random variable is one that can take any value in some interval of the real line.

So what do you think for A,B,C and D

CB
 
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. In Dirac’s Principles of Quantum Mechanics published in 1930 he introduced a “convenient notation” he referred to as a “delta function” which he treated as a continuum analog to the discrete Kronecker delta. The Kronecker delta is simply the indexed components of the identity operator in matrix algebra Source: https://www.physicsforums.com/insights/what-exactly-is-diracs-delta-function/ by...
Fermat's Last Theorem has long been one of the most famous mathematical problems, and is now one of the most famous theorems. It simply states that the equation $$ a^n+b^n=c^n $$ has no solutions with positive integers if ##n>2.## It was named after Pierre de Fermat (1607-1665). The problem itself stems from the book Arithmetica by Diophantus of Alexandria. It gained popularity because Fermat noted in his copy "Cubum autem in duos cubos, aut quadratoquadratum in duos quadratoquadratos, et...
Thread 'Imaginary Pythagorus'
I posted this in the Lame Math thread, but it's got me thinking. Is there any validity to this? Or is it really just a mathematical trick? Naively, I see that i2 + plus 12 does equal zero2. But does this have a meaning? I know one can treat the imaginary number line as just another axis like the reals, but does that mean this does represent a triangle in the complex plane with a hypotenuse of length zero? Ibix offered a rendering of the diagram using what I assume is matrix* notation...
Back
Top