The names assigned to the response categories (such as males, females) during data entry are referred to as variable names.
The numbers assigned to the response options (such as 1 for males and 2 for females) assigned during data entry are referred to as digits.
Bivariate tables are those that contain two variables.
The horizontal line of the coordinate axes is called the Y-axis or ordinate.
The vertical line of the coordinate axes is called the X-axis or abscissa.
The two lines placed at right angles to each other, intersecting at the lower left-hand part of a figure, are the coordinate axes.
The values of the independent variable are scaled along the ordinate.
The values of the dependent variable are marked off along the abscissa.
In a diagram, the lowest values of ordinal scales are placed on the left-hand end and the highest values on the right-hand end of the line.
Rate, ratio and percentage are measures of dispersion.
The mode is used if the variable is nominally scaled, although it can be used for all types of data.
If information is needed about the location of cases in the two halves of the distribution, the mean is a better measure.
Pearson’s and Spearman’s measures are used to study associations between variables and are most appropriate when variables are measured at the nominal level.