worksheet
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 single numerical item that describes a value in a chart is called a "data point." Data points represent individual values plotted in a chart or graph, serving as specific measurements or observations that contribute to the overall analysis of the data set.
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.
To show exact values for a data series in a bar chart, you should display data labels. Data labels provide specific numerical values for each bar, enhancing the chart's clarity and allowing viewers to quickly understand the exact quantities represented. You can customize the placement of these labels for better visibility and readability.