Wayne is testing three different laundry detergents to see which one removes stains the best. Wayne’s results are in the chart below.
Percentage of Stains Removed
Detergent Wash 1 Wash 2 Wash3
A 28 14 23
B 87 79 91
C 35 42 39
Wayne notices that each time, the detergents remove a different percentage of stains. He is trying to find the most effective brand. Are the differences in results among the brands trivial or significant?

Question

Wayne is testing three different laundry detergents to see which one removes stains the best. Wayne’s results are in the chart below.
Percentage of Stains Removed
Detergent	Wash 1	Wash 2	Wash3
A	28	14	23
B	87	79	91
C	35	42	39
Wayne notices that each time, the detergents remove a different percentage of stains. He is trying to find the most effective brand. Are the differences in results among the brands trivial or significant?

anonymous · Answer

significant, because the percentages for each detergent vary by more than 5 points
trivial, because the results of every experiment are always going to vary
trivial, because if the results vary, Wayne cannot judge which detergent is best
significant, because Detergent B consistently removes more stains than the other detergents