A bar chart or a pie chart.
Not sure about steam-and-leaf but a stem-and-leaf plot is used for numerical data.
data
piece of paper, possibly.
A frequency distribution of numerical data where the raw data is not grouped.
Numerical data are organized by a graph.
Yes, a chart can be used to display numerical data.
The original spreadsheet, or you can get the chart to have a data table attached to it when you are creating it.
Y
A pie chart is often used to display numerical, portioned data.
When you create a chart it can be embedded into the sheet where the data appears. You also have the option of setting the chart to be on a sheet tab of its own. This is a Chart Sheet.
Histogram
Numerical data is numbers. Non-numerical data is anything else.
Bar chart or bar graph
In business, a chart mostly refers to a pie chart or bar chart or a pictogram; a table is a set of data in numerical or textual form organised in a formal way; a diagram can simply be a line drawing.
The legend on a column chart appears along the lower horizontal axis. The height of columns provides the comparative data from numerical values.
Numerical data is quantitative research