Card 1 of 21
What determines the value of a random variable?
A
A probability distribution describes the possible values and how likely they are.
B
A random variable has a value determined by the outcome of a random process.
C
In normal-distribution notation X∼N(μ,σ2)X \sim \mathrm{N}(\mu,\sigma^2)X∼N(μ,σ2), the second parameter is the variance, not the standard deviation.
D
Success means the outcome being counted; it need not be desirable.
Card 1 of 21
2.4.8 Selecting an appropriate distribution (A-level only) Flashcards
21 flashcards on OCR A Level Maths 2.4.8 Selecting an appropriate distribution (A-level only): the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3.