In the context of the errors involved in graphing data, which of the following is an error of scale?

the misuse of typeface

unequal dimensions from left to right or bottom to top

the choice of wrong chart type

inconsistency in labeling and inappropriate selection of visual content

distracting use of grids and shading

Which of the following guidelines should be followed when constructing tables?

The question mark sign should be used to indicate unavailable data in a table.

Footnote references to numbers in a table should be keyed with superscript numbers.

The zero (0) should be used to indicate unavailable data in a table.

Column totals should always be placed at the top of the column.

If rows are long, the row heads may be repeated at the right.