A scatter diagram is the best tool for analyzing the relationship between the percentage of an ingredient in an alloy and the hardness of the alloy.
Scatter diagrams are the most appropriate tool for Richard to use in examining the relationship between the percentage of an ingredient in an alloy and the hardness of the alloy. Scatter diagrams plot pairs of numerical data, with one variable on each axis, to help identify any correlation or patterns between the two variables. By analyzing the scatter plot, Richard can visually determine if there is a relationship between the percentage of the ingredient and the hardness of the alloy.
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