Quiz
Discrete random variables
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Questions in this quiz (7)
1To work out the [blank_start]expectation[blank_end] you take each [blank_start]outcome[blank_end] and [blank_start]multiply[blank_end] it by its [blank_start]probability[blank_end]. You then add these up.
- Aexpectation
- Bvariance
- Coutcome
- Dchoice
- Emultiply
- Fadd
- Gprobability
- Hr value
2To work out the [blank_start]variance[blank_end] you take each [blank_start]outcome[blank_end] value, [blank_start]square[blank_end] it, then [blank_start]multiply[blank_end] it by the probability value. You add these up together. Then you square the [blank_start]expectation[blank_end] and use it to [blank_start]minus[blank_end] from the previous value.
- Avariance
- Bmean
- Coutcome
- Doption
- Esquare
- Fdivide
- Gmultiply
- Hadd
- Iexpectation
- Jprobabilities
- Kminus
- Lsquare root and then add
3Two four sided dice are thrown with face 1-4. Below is a probability table, fill it in with the probability of the sum of the two dice.
- A1/16
- B4/16
- C3/16
- D2/16
4What type of distribution is this?
- ASymmetrical
- BPositive skew
- CNegative skew
- DStandard
5The probability of getting an odd number is: [blank_start]1/2[blank_end].
The probability of getting a number between 1<x≤ 3 is: [blank_start]3/16[blank_end]
- A1/2
- B3/16
6P(X=r) = k(6r²-r³) for r=1,2,3,4,5
What is K?
K=[blank_start]1/105[blank_end]- A1/105
7Answer the parts to the question
- Aa= 0.05 b=0.2
- B0.7
- C2.27
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- Description
- AS level Maths (Stats 1) Quiz on Discrete random variables, created by Kashly Cash on 15/02/2017.
- Author
- Kashly Cash
- Language
- English
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