18.You have a graph in which the means and SD bars are depicted.In this graph the error bars for sample A do not overlap those for sample B.

a.You can conclude that there IS a difference between sample A and Sample B

b.You can conclude that there ISNOT a difference between sample A and Sample B

c.You can't conclude anything about the differences between means by looking at error bars that represent the SD of that data set

d.You can conclude something using SD error bars but it would need for the error bars to overlap for you to be able to draw that conclusion.

19.You have a graph in which the means and SE bars are depicted.In this graph the error bars for sample A do not overlap those for sample B.

a.You can conclude that there IS a difference between sample A and Sample B

b.You can conclude that there ISNOT a difference between sample A and Sample B

c.You can't conclude anything about the differences between means by looking at error bars that represent the SE of that data set

d.You can conclude something using SE error bars but it would need for the error bars to overlap for you to be able to draw that conclusion.

20.You have a graph in which the means and error bars representing a 95% confidence interval (CI) are depicted.In this graph the error bars for sample A do not overlap those for sample B.

a.You can conclude that there IS a difference between sample A and Sample B

b.You can conclude that there ISNOT a difference between sample A and Sample B

c.You can't conclude anything about the differences between means by looking at error bars that represent the 95% CI of that data set

d.You can conclude something using 95% CI error bars but it would need for the error bars to overlap for you to be able to draw that conclusion.