- Choose a set of axes. One to represent the score and one for the frequency. In general, these axes are perpendicular lines, but they need not be.
- Choose a scale for each axis. In general, your scale is going to be linear, but it needs not be. The scale should be representative of the data, eg. if your max score is 10, scaling the score's axis up to 1000 would be pretty meaningless.
- Each data point should be represented by an ordered pair (x,y) where x is the score and y is the frequency.
- Find the position of x on the axis representing score.
- From that point, which should be (x,0), move in a direction parallel to the axis representing frequency, an amount equal to y
- That is the graphical point representing that particular score's frequency.
- Repeat for all scores.
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In my view, the best plot for bivariate data is a scatter plot.
On whichever variable is considered the y-variable. It would be the second element of each ordered pair of data points.
line plot
A Histogram, a line plot and a line graph.
Line plot