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Katon

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how to remember the difference between dependent and independent variable and which one is X n Y ?
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A microwave oven costing RM500 was marked up 10% based on retail price. later it was marked down by 5%. WHAT is the final retail price? i get RM500/100X110=RM550 RMM550(1-0.05) =RM522.5 but in my book the answer is rm527.78 ?
for first column show the mother age with the value 18,22,29,20,27,32,33,36 and the second column show the no of children with the value 2,1,3,1,2,4,3,5 and question ask to find independent and dependent variables. that why i ask how to difference between
for example mother age and no of children.how we want to know which one is dependent or independent and which one is x or y to draw the scatter plot

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