Find separately for each group the mean x, variance s2

Reference no: EM13953226

Data are shown in Table E2.27 for two groups of patients who died of acute myelogenous leukemia. Patients were classified into the two groups according to the presence or absence of a morphologic characteristic of white cells. Patients termed AG positive were identified by the presence of Auer rods and/or significant granulature of the leukemic cells in the bone marrow at diagnosis. For AG-negative patients, these factors were absent. Leukemia is a cancer characterized by an overproliferation of white blood cells; the higher the white blood count (WBC), the more severe the disease.

AG Positive, N = 17 Survival Time WBC (weeks)	AG Negative, N = 16 Survival Time WBC (weeks)
2,300 65	4,400	56
750 156	3,000	65
4,300 100	4,000	17
2,600 134	1,500	7
6,000 16	9,000	16
10,500 108	5,300	22
10,000 121	10,000	3
17,000 4	19,000	4
5,400 39	27,000	2
7,000 143	28,000	3
9,400 56	31,000	8
32,000 26	26,000	4
35,000 22	21,000	3
100,000 1	79,000	30
100,000 1	100,000	4
52,000 5	100,000	43
100,000 65	100,000	43

(a) Calculate separately for each group (AG positive and AG negative) the mean x, variance s2, and standard deviation s for survival time.

(b) Calculate separately for each group (AG positive and AG negative) the mean, geometric mean, and median for white blood count.

Reference no: EM13953226

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