A health researcher wants to be able to predict the long jump performance of school children. In the long jump competition, athletes sprint along a runway and jump as far as they can into a sandpit from a wooden take-off board. The jump distance is measured from the edge of the board to the closest indentation in the sand to it. The researcher is planning to collect the long jump performance data at the school athletics competition. To predict the long jump performance, other variables should be included in the study. The researcher suggested that the height of the participants should be recorded and included in the study. It was predicted that taller participants would tend to perform better in the long jump competition. Your tasks are: Suggest a third variable that can be included in the study. Specify how the third variable will be measured. What level of measurement is it (nominal, ordinal, interval, or ratio)? Describe the relationship between the three variables (Hint: see pp. 31-35 of Topic 1 Notes). You may draw a diagram for clarity