discovering statistics using ibm spss statistics

The means of scores across different groups or categories.ĭifferent coloured bars to represent levels of a second grouping variable ( e.g: film rating and excitement and enjoyment) Multiple boxplots for the chosen outcome by splitting the data by a categorical variableĪ simple boxplot, but it splits the data by a second categorical variable.īar charts are often used to display means. There are several types of boxplots:Ī single boxplot for all scores of the chosen outcome It is surrounded by the quartiles which show 25% and 75% of the data. The same as a simple histogram, but uses a line, instead of a barĬomparing distributions across groups and the relative frequencies of scores in two populations.Ī box-plot or box-whisker diagram uses the median as the centre of the plot. Visualize frequencies of scores for a single variableĬompare relative frequencies of scores across groups

Do not use cylinder shaped bars if that is not functional.

Do not use unnecessary patterns in the bars.

If plotting two variables, never use 3-D plots.

There are also some graph building guidelines:

Encourage the reader to compare different pieces of data.

Induce the reader to think about the presented data.

A good graph has the following properties:

Discovering statistics using ibm spss statistics