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Problem IV (40pts) Hoekema et al. (A-3) studied craniofacial morphology of patients diagnosed with obstructive researchers collected for all subjects was the Body Mass Index (BMI, calculated by dividing OSAS subjects. sleep apnea syndrome (OSAS) in healthy male subjects. One of the demographic variables the weight in kg by the square of the patients height in cm). The following are the BMI values of 29 33.57 27.78 40.81 33.34 29.01 47.78 26.86 54.33 28.99 24.21 31.49 27.38 34.42 41.50 29.39 24.54 41.75 42.68 24.49 43.23 47.09 29.07 28.21 41.10 21.54 27.74 33.48 31.44 30.08 Source: Data provided courtesy of A. Hockema, D.D.S. (a) Use these data to construct A frequency distribution (3pts) A relative frequency distribution (3pts) A cumulative frequency distribution (3pts) A cumulative relative frequency distributions (3pts) A histogram and a box-and-whisker plot (use MATLAB, show codes, 5pts)
A frequency polygon (3pts) A stem-and-leaf display for the data. (use MATLAB, show codes, 5pts) (b) What percentage of the measurements are less than 30? (3pts) (c) What percentage of the measurements are between 30.0 and 49.99 inclusive? (3pts) (d) What percentage of the measurements are greater than 34.99? (3pts) (e) How many of the measurements are greater than 40? (2pts) (f) Describe these data with respect to symmetry/skewness and kurtosis. (4pts) (g) Find the mean, median, variance, standard deviation and coefficient of variation of the BMI data (5pts)
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