H.W : For a sample of Saudi women , we obtain the following graph for the serum cholesterol ( in mmol/1) . 30- Frequency 20- 10- 15 serum cholestrol Answer the following questions: 1. The type of the graph is ................... 2. The variable is ..............................".." The type of the variable is 3. The sample size is .......... 4. The number of Saudi women with more than 6 serum cholesterol is ........ 5. The percent of Saudi women between 4 and 6 serum cholesterol is 6. The serum cholesterol with the lowest percentage is between the interval 7. Width is ................."