In the following study a sample of n-933 men and women aged 25-64, who have recently suffered severe back pain, were selected. The objective of the study was to determine the factors that have the greatest influence on the severity of back pain. Each subject was given a problemnaire and scored on a scale of 0-100 as to severity of their back pain disability. In addition to age and sex, measurements were taken on height, weight, and weight/height ratio and lifetime participation rate in physical activity (active, Non-active) on each of the n-933 subjects. Discuss the possible ways to analyze the data. What sort of problems could one expect with your analysis.