Summary
Highlights
Begin by drawing X and Y axes, marking the origin with zero. Ensure scale points are clear and equally distant, increasing in consistent multiples. The Y-axis represents the dependent variable with its heading and unit. The X-axis represents the independent variable with its heading and unit. The overall graph heading must include both variables.
For histograms, ensure clear scale points, origin, and properly labeled axes. A key characteristic is that there are no spaces between the bars, and all bars must have the same width.
Similar to histograms, line graphs require an origin, accurate scale numbers, and labeled axes. Plotting points must be precise and aligned with the scale numbers. When connecting plotting points, always use a ruler.
To draw a pie chart, first convert raw numbers into percentages. Then, convert these percentages into degrees by multiplying by 3.6 (which is 360/100). The sum of degrees for all segments must equal 360. The pie chart should have a heading with both variables and can use a key for clarity instead of writing percentages directly on the segments.
Bar graphs require properly drawn axes, clear scale points, an origin, and labeled headings and units. Crucially, bar graphs must have equal spaces between the bars, and all bars should have the same width. The graph heading must include both variables.