The number of grams of calorie-free sodium in a restaurant meal is compared to the total number of calories in the meal. the correlation coefficient relating the two variables is 0.74. which best describes the strength of the correlation, and what is true about the causation between the variables?

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each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.