75% of the values of the variable are below 70

The interquartile range (IQR) is 10

An observation equal to 19 is an outlier

There are 50% of the observations between 50 and 70

The coefficient of variation is 50%

The distribution is not symmetric

The first quartile is equal to 2 

The distribution is platykurtic

Is based only on two values of the variable

Has no unit

Sensitive to extreme values

Is larger than the standard deviation

X=(1,2,2,2,3,4,5,6)

X=(1,2,2,3,4,5,5,5)

X=(1,2,2,3,4,4,5,6)

X=(1,2,3,4,5,6,7,8)

To see if the distribution is multimodal

To assess the symmetry of the distribution

To detect outliers

To detect erroneous values

Poisson

Bernoulli 

Binomial

Normal

a function that gives values that are all between 0 and 1

A mathematical function

a random function 

a function equal to 0 for impossible values of the variables 

is always positive

is the most likely value of the variable

can be 0

is proportional to the parameter p

its expectation

its Probability distribution function (PDF)

its probability density function (pdf)

its variance