Formulas Flashcards

1
Q

Conditions for Poisson distribution

A

Random and independent events
constant rate
sigularly

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2
Q

Conditions for Poisson distribution

A

Independent and random
Constant rate
Singularly

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3
Q

Conditions for discreet uniform distribution

A

Random variables can take an infinite number of values
equal probability

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4
Q

Variance CUD equation

A

1/12 (b-a)^2

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5
Q

Mew CUD equation

A

(a+b)/2

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6
Q

CUD graph y axis equation

A

a/(b-a)

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7
Q

Standard normal distribution equation

A

Z= (x-u)/o

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8
Q

Conditions for binomial distribution

A

Fixed trials
independent
2 options
equal success

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9
Q

When should Ho be rejected

A

If the % is lower than 5 (or asked for stat)

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10
Q

Binomial approximation conditions

A

If n is large
P is close to 0.5

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11
Q

Binomial approximation formulae (2)

A

u= np
o=root np(1-p)

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12
Q

How to preform continuity corrections to BA

A

x>5 —> Y>5.5
x=9 —> 8.5</= Y</=9.5
x<3 —> Y<3.5

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13
Q

How are correlations measured?

A

0= no correlation

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14
Q

When is Ho accepted in correlation moment testing

A

If r is smaller that the PMC

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