# Talk:QB/d Bell.Venn

## QB/d_Bell.Venn [edit]

### 1[edit]

- Calculate the measured probability:

P(♠,♦) = ?

Assume the dots represent five observations.

- 2/4=1/2 - 2/5 + 3/5 - 3/4 - 5/6

#### Hint[edit]

(2+1)/5 = 3/5 (Add dots in the α and Δ regions)

### 2[edit]

- Calculate the measured probability:

P(♠,♥) = ?

Assume the dots represent five observations.

- 2/4=1/2 + 2/5 - 3/5 - 3/4 - 5/6

#### Hint[edit]

(1+1)/5=2/5 add dots in the β and Δ regions

### 3[edit]

- Calculate the probability

P(♠,♦)+P(♠,♥)+P(♥,♦) = ?

Assume the dots represent five observations.

- 4/5 - 5/6 - 5/4 - 6/5 + 7/5

#### Hint[edit]

(5+2)/5=7/5 Add the dots, and then add twice the center. Or add the dots outside the Δ region, and then add three times what is in the Δ region (since it gets counted thrice).

### 4[edit]

- Calculate the quantum correlation:

C(♠,♦) = ?

Assume the dots represent five observations.

- −2/5 - −1/5 - 0 + +1/5 - +2/5 - +1

#### Hint[edit]

P(spade,diamond)=3/5 and C=2P-1 = +1/5= {3(same)−2(different)}/5

### 5[edit]

- Calculate the measured quantum correlation:

C(♠,♥) = ?

Assume the dots represent five observations.

- −2/5 + −1/5 - 0 - +1/5 - +2/5 - +1

#### Hint[edit]

### 6[edit]

- If a number is randomly selected from the set {2,3,4,5}, what is P(even), or the probability that the number is even?

- 0 - 1/4 + 1/2 - 3/4 - 1 - 5/4

#### Hint[edit]

2 and 4 are even

### 7[edit]

- If a number is randomly selected from the set {2,3,4,5}, what is P(prime), or the probability that the number is prime?

- 0 - 1/4 - 1/2 + 3/4 - 1 - 5/4

#### Hint[edit]

2, 3, and 5 are prime

### 8[edit]

- If a number is randomly selected from the set {2,3,4,5}, what is P(prime)+P(even), or the sum of the probability that it is even, plus the probability that it is prime?

- 0 - 1/4 - 1/2 - 3/4 - 1 + 5/4

#### Hint[edit]

P(even)+P(prime)= 2/4 + 3/4 = 5/4

### 9[edit]

- If a number is randomly selected from the set {2,3,4,5}, what is the probability that it is both even and prime?

- 0 + 1/4 - 1/2 - 3/4 - 1 - 5/4

#### Hint[edit]

Only 2 is both prime and even

### 10[edit]

- If a number is randomly selected from the set {2,3,4,5}, what is the probability that it is either even or prime?

- 0 - 1/4 - 1/2 - 3/4 + 1 - 5/4

#### Hint[edit]

Every number is either: the first is boty, the second is odd, the third is even, and the fourth is odd (whew!)

## Raw script[edit]

- t QB/d_Bell.Venn
- ! CC0 user:Guy vandegrift
- ?Calculate the measured probability:

P(♠,♦) = ?

Assume the dots represent five observations. - - 2/4=1/2
- - 2/5
- + 3/5
- - 3/4
- - 5/6
- $ (2+1)/5 = 3/5 (Add dots in the α and Δ regions)

- ! CC0 user:Guy vandegrift
- ?Calculate the measured probability:

P(♠,♥) = ?

Assume the dots represent five observations. - - 2/4=1/2
- + 2/5
- - 3/5
- - 3/4
- - 5/6
- $ (1+1)/5=2/5 add dots in the β and Δ regions

- ! CC0 user:Guy vandegrift
- ?Calculate the probability

P(♠,♦)+P(♠,♥)+P(♥,♦) = ?

Assume the dots represent five observations. - -4/5
- -5/6
- -5/4
- -6/5
- +7/5
- $ (5+2)/5=7/5 Add the dots, and then add twice the center. Or add the dots outside the Δ region, and then add three times what is in the Δ region (since it gets counted thrice).

- ! CC0 user:Guy vandegrift
- ?Calculate the quantum correlation:

C(♠,♦) = ?

Assume the dots represent five observations. - - −2/5
- - −1/5
- - 0
- + +1/5
- - +2/5
- - +1
- $P(spade,diamond)=3/5 and C=2P-1 = +1/5= {3(same)−2(different)}/5

- ! CC0 user:Guy vandegrift
- ?Calculate the measured quantum correlation:

C(♠,♥) = ?

Assume the dots represent five observations. - - −2/5
- + −1/5
- - 0
- - +1/5
- - +2/5
- - +1
- $

- ! CC0 user:Guy vandegrift
- ?If a number is randomly selected from the set {2,3,4,5}, what is P(even), or the probability that the number is even?
- - 0
- - 1/4
- + 1/2
- - 3/4
- - 1
- - 5/4
- $ 2 and 4 are even

- ! CC0 user:Guy vandegrift
- ?If a number is randomly selected from the set {2,3,4,5}, what is P(prime), or the probability that the number is prime?
- - 0
- - 1/4
- - 1/2
- + 3/4
- - 1
- - 5/4
- $ 2, 3, and 5 are prime

- ! CC0 user:Guy vandegrift
- ?If a number is randomly selected from the set {2,3,4,5}, what is P(prime)+P(even), or the sum of the probability that it is even, plus the probability that it is prime?
- - 0
- - 1/4
- - 1/2
- - 3/4
- - 1
- + 5/4
- $ P(even)+P(prime)= 2/4 + 3/4 = 5/4

- ! CC0 user:Guy vandegrift
- ?If a number is randomly selected from the set {2,3,4,5}, what is the probability that it is both even and prime?
- - 0
- + 1/4
- - 1/2
- - 3/4
- - 1
- - 5/4
- $ Only 2 is both prime and even

- ! CC0 user:Guy vandegrift
- ?If a number is randomly selected from the set {2,3,4,5}, what is the probability that it is either even or prime?
- - 0
- - 1/4
- - 1/2
- - 3/4
- + 1
- - 5/4
- $ Every number is either: the first is boty, the second is odd, the third is even, and the fourth is odd (whew!)