Question 1,2,3

The following are the ages of 3i] patients seen in the emergency room of a hospital on a Friday night. 35 32 21 43 35' 5'3 35 12 5-4 45 3? 53 45 23 54 11:] 34 22 35 45 55 M 55 4E 22 33 35 55 45 5'.-" a. Find the number of class Internal and width of each class interval. h. {Ions-truct a frequency distributior'l table from your answer in {a}. c. Draw a suitable graph to represent your data. d. Construct a stemandIea'i plot. Hoeltema et al. [ital studied the craniofaclal morphology of patients diagnosed with obstructive sleep apnea syndrome {05:45] in healthy male subjects. One of the demographic variables the researches collected for all subjects was the Body Mass Index [BMIL The followili are the BMI values of 23' D535 subject: 33.5? ms 30.31 33.34 25.01 11123 25.35 54.33 23.33 25.21 3iL45 22.33 35.42 41.50 25.35 24.54 41.25 44.53 24.45 33.23 42.113 29.0'? 23.21 42.15 25.54 22.24 33.43 31.44 311.03 Find: a. Mean b. Median c. mode. i311 a certain day. 542 cars were parked in the parking lots of a shopping complex. The parking duration of each car is shown in the table below. Time 25-51 52- 31 135- 114- 1513- 153- M113 1413 13? 29? a Mean b. Median c. Mode d lnterquartile range e \"ance