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What are often used on graphs to show statistical comparison?
Error bars are often used on graphs to show statistical comparisons.
What do error bar show within?
The centre of the error bar shows the point estimate for a variable and the bits that stick out are the likely minimum and maximum values.
Uses bars to show the relationships between variables?
A Bar Graph!
What is something that uses bars to show the relationship between two variables?
A bar graph form the best, ME!
How can you use a bar diagram to show a percent of change?
Yes, but not a single bar. You need stacked bars or, preferably, a pair of bars. With stacked bars you would have the original quantity as the lower bar, and the increased quantity (after the percentage change) as the stacked bar on top. This method does not really work if the percentage change is a decrease. With a pair of bars, the first would show the quantity before the change and the second would show the total quantity after the percentage change. So, if it was a percentage increase, the second bar would be taller, and if it was a percentage decrease, it would be shorter.
