What is the difference between consecutive points (1,9) and (2,6) in y?
QUESTION
What is the missing category value if the sum of 4 categories is 50 and three are 10, 15, 12?
QUESTION
What does the total for several categories on a bar graph equal?
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ANSWER
The sum of the bar heights for those categories. Summing the heights of selected bars provides the combined total across those categories on a bar graph.