Data markers1. The width of data ma

Data markers
1. The width of data markers are too narrow or wide
Manipulated baselines
2. Axes do not start from zero, especially vertical axe
Scales and axes
3. Improperly presented negative numbers on axes
4. The space between data markers are not equal
5. Order of time-series is not from left to right
6. Missing axes, no matter X or Y
Inadequate chart titles and labels
7. Missing heading of titles
8. Missing labels
9. Missing name of the axes, especially vertical axe
Gridlines absent or obtrusive
10. Improperly use gridlines
11. Backgrounds are obtrusive, or absent when needed
Numbers missing
12. Absence of data value on bars or pies
Pie construction
13. Pie sectors are not in a descending sequence
14. More than five slices of pie charts
Problems in creative visual effects
15. Present poorly on visual effects
Angle of line graph
16. Slope of parameter does not approximate 45 degree