# Statistics Symbols - B

### Symbol: b

Meaning:
Linear least square regression line's slope. It is known as the slope.
Formula used:
Y=a+bX is the regression line of y on x
ȳ and x̄ are the means of y and x
Used in:
Regression

### Symbol: B(n, p)

Meaning:
B denotes binomial distribution, and n and p denote its parameter. It is a discrete probability distribution which accounts for the number of successes in n independent random trails.
Formula used:
X follows Binomial distribution, i.e., X~ B (n, p)
The pmf of X is given by,
P(X=x)= nCx px (1-p)n-x , x=0,1,2,….,n ,0<p<1
Used in:
Binomial Distribution.

### Symbol: Bern(p)

Meaning:
It denotes Bernoulli distribution, p its parameter. It is a discrete probability distribution
Formula used:
X follows Bernoulli distribution, i.e., X~ Bern (p)
The pmf of X is given by,
f (k;p)=pk(1-p)1-k for k ∈ {0, 1}
Used in:
Bernoulli distribution.

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