Symbols/Notation Flashcards

1
Q

What symbol is this? x̄

A

X-bar

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2
Q

What does this symbol mean? x̄

A

Sample mean

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3
Q

What does this symbol mean? N

A

Population size

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4
Q

What does this symbol mean? n

A

Sample size

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5
Q

What does this symbol mean? s

A

Sample standard deviation

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6
Q

What does this symbol mean? ∑

A

Summation

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7
Q

What symbol is this? ∑

A

Sigma

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8
Q

What is this symbol? σ

A

Sigma

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9
Q

What does this symbol mean? σ²

A

Population Variance

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10
Q

What does this symbol mean? s²

A

Sample Variance

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11
Q

What is this symbol? µ

A

Mu

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12
Q

What does this symbol mean? µ

A

Population mean

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13
Q

What does this symbol mean? σ

A

Population Standard Deviation

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14
Q

What does this symbol mean? r

A

Sample correlation coefficient

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15
Q

What does this symbol mean? r² or R²

A

Coefficient of determination

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16
Q

What does this symbol mean? ρ (rho)

A

Population correlation coefficient

17
Q

What does this symbol mean? ŷ

A

Prediction of y

18
Q

What does this symbol mean? b1

A

Slope of regression line

19
Q

What does this symbol mean? b0

A

Y-intercept of regression line

20
Q

What is this symbol? ≠

A

Not equal to

21
Q

What is this symbol < ?

A

Less than, is less than

22
Q

What is this symbol > ?

A

Greater than, is more than, is greater than

23
Q

What is this symbol ≤ ?

A

Less than or equal to, no more than, no greater than

24
Q

What is this symbol ≥ ?

A

Greater than or equal to, is at least, no less than

25
Q

What is the binomial notation?

A

X~bin(n,p)
n= # or trials
p= probability of success in a single trial that remains constant

26
Q

What does this symbol mean? n

A

The number of times a trial is repeated

27
Q

What does this mean? p= P(S)

A

The probability of success in a single trial

28
Q

What does this mean? q= P(F)

A

The probability of failure in a single trial (q= 1-p)

29
Q

What is the Normal Distribution notation?

A

X~N (µ,σ)

30
Q

What is the Standard Normal Distribution notation?

A

Z~N (0,1)