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.

contains information on each member of a sample or population individually

Data sets are organized into tables, and data are displayed using tree

A frequency distribution for qualitative data lists all categories and the number of elements that belong to each of the categories

Data presented in the form of a frequency distribution are called (جت في الامتحان)

Relative frequency of a category = Frequency of that category / sum of all frequencies

The bar graph and the pie chart are two common types of graphs that are used to display …data

A graph made of bars whose heights represent the frequencies of respective categories.

To construct a bar graph (bar chart), we mark the various categories on the ............ axis

In the bar chart all categories are represented by intervals of the different width

In the bar chart We mark the frequencies on the …. axis