Presentation and display of quantitative data

When is it appropriate to use bar charts to display quantitative data?

When data is comparing the means of two groups, or frequency data for categories

When is it appropriate to use scattergrams to display quantitative data? (3)

represent correlational data, there has to be two scores for each participant, one for the x-axis and one for the y-axis

When is it appropriate to use a histogram to display quantitative data? (3)

histograms are used to visualise the frequency of distribution of a continuous variable, x-axis values follow on from each other and are ordinal or interval data, shows continuous data

How is a histogram different from a bar chart? (2)

histograms show continuous data, so there are no spaces between the bars on a histogram

When is it appropriate to use tables to display quantitative data?

often completed before charts and graphs

When are frequency tables used? (2)

to show data displayed in a histogram, summarising one variable

When are contingency tables used? (2)

to show the relationship between two or more categorical variables by displaying the frequency of observations for each combination of categories, each cell shows the frequency of cases that fall into that combination of categories