estion 4 (May/June 2016 P1) Research shows that the average age of first menstruation is influenced by socio-economic status as well as race. Scientists carried out an investigation to determine the average age of the first menstruation of the girls in a community Their hypothesis was The average age of first menstruation has decreased over time. 2.5.1 For the investigation state the (a) Independent variable (b) Dependent variable
The independent variable would be what the researches are controlling (kind of in this case) That would be socio-economic status. The dependent variable is what they are measuring, the age of first menses.
