As children grow older, their discretionary income usually increases. The best conclusion to draw about the variables age and income are that they are:
a. causally related
b. uncorrelated
c. negatively correlated
d. positively correlated

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The Answer of As children grow older, their discretionary income usually increases. The best conclusion to draw about the variables age and income are that they are:
a. causally related
b. uncorrelated
c. negatively correlated
d. positively correlated

As Children Grow Older, Their Discretionary Income Usually Increases