is a variable that can be measured numerically.

Discrete variable :is a variable that can assume any numerical value over a certain interval.

is a variable whose values are countable

can assume only certain values with no intermediate values

has a clear ordering.

Finishing tine for runners in a race (جت في الامتحان )

A data set consisting of observations on two or more attributes

bivariate data set : A data set consisting of observations on a single attribute

A data set consisting of observations on two different attributes

Bivariate data are a special case of

in a stratified random sample, we first divide the population into nonoverlapping subgroups,
which are called …

this sampling technique, each sample of the same size has the same chance (probability) of
being selected

we first randomly select one member from the first k units. Then every*th member, starting with the first selected member, is included in the sample.

Data

The information is recorded as numbers and represents an objective measurement or a count. Temperature, weight, and a count of transactions

The information represents characteristics that you do not measure with numbers. Taste, eye, colour, architectural style, and marital status

Histograms are a standard way to graph........... variables.

Bar charts are a standard way to graph continuous variables.

Qualitative Data

Data recorded in the sequence in which they are collected and before they are processed or ranked.