Read a chart's title and axis labels before pulling any value from it.
Trace a table row to the correct column to find a single value.
Convert a pie chart slice into a real count using the given total.
What the lesson concludes
Read the title and both axis or column labels before reading any value, so you know what unit you are working with.
For a table, trace one row to one column and read only that cell unless the question asks for a total.
For a bar or line chart, match the category or point first, then read the value off the other axis using the gridlines.
A pie slice is a fraction of the whole, so multiply its percentage by the given total to get a real count.
A wrong answer choice is often the correct row's total or the correct column's total, not the single cell asked for, so double check which one the question wants.