Question

please help with E-j

1. A medical research team studied the ages of patients who had strokes caused by stress. The ages of 34 patients who suffered stress strokes were as follows. 55 58 60 61 66 68 73 73 76 76 76 79 82 82 85 88 90 91 91 95 A. n = =20 B. Range = 95-55 = 40 C. Midrange = 9 S1+55 +2=122.5 D. Mode = 376 E. Class width if we wish to have 3 classes = F. How many numbers are strictly below 76? G. What percent of data are strictly below 76? H. Make a complete frequency distribution table starting with the minimum value: Class Class Frequency Cumulative Relative Percent Boundaries Midpoint Frequency Frequency Frequency Class Limits 1. What percent of data fall within 55 to 82, inclusive? J. Draw histogram, Ogive, Frequency Polygon, and Pie Chart

Answer 1

Data Solution E class width is que wish to if 15. have 3 classes F numbers strictly below 76. G percentage of data are strictly below 76 is. numbers below 76 percentage : X 100 8 20 407. class class limits boundry class midpoint freg Cumu relative percent freg. freg. frequency 62 0.3 155-69 54.5-69.5. 70-8469.5-84.5 85-99 84.5699.5 77 92 14 20 0.4 0.3 307. 4of. 304. data fall within I percentage of 55 to 82 numbers between 55 to 82 percentage x 100 19 x 100 20 70%.

J Ogive Curve frequency Cumulative freg. 6 class 54.5-69.5 69.5-84.5 la 84.5-99.5 6 19 8 20 Is S A 0 54.5 69.5 845 99.5 treguency polygon. class mid point freg. 6 STS-69.5 62 69.5-84.5 77 84.5-99.Sun. 9,2- 8 6

kt to 8 6 g 2 A 12 7 x 62 77 92 167

classes	frequency
54.5-69.5	6
69.5-84.5	8
84.5-99.5	6

Histogram 9 8 8 7 6 6 6 5 frequency 3 2 1 0 54.5-69.5 84.5-99.5 69.5-84.5 classes

Piechart . 54.5-69.5 6 6 .69.5-84.5 84.5-99.5 8