Question

1-

25	28	24	21	28	26	23
22	29	21	29	24	22	25
26	18	27	26	29	23	21
26	27	21	25	27	24	29
22	25	24	24	21	29	22
25	21	22	22	25	22	25

Calculate a) arithmetic mean and b) standard deviation of the sample.

A)

b)

- Represent a classified frequency table. Answer the following questions in this table with column calculations.

Calculate a) arithmetic mean, b) quadratic mean, c) geometric mean, d) corrected standard deviation, e) mode and f) median

a)

b)

c)

d)

e)

f)

Calculate and interpret g) skewness, h) curvature and ı) coefficient of consolidation?

g)

h)

ı)

What is the critical value, of which 90% of all observations have a larger value?

Answer 1

25	28	24	21	28	26	23
22	29	21	29	24	22	25
26	18	27	26	29	23	21
26	27	21	25	27	24	29
22	25	24	24	21	29	22
25	21	22	22	25	22	25
MEAN	24.40476
S.D	2.760776
MIN	18
MAX	29

C . I	f	x	fx	fxx	Logx	flogx
18 - 20	1	19	19	361	1.278754	1.278754
20 - 22	6	21	126	2646	1.322219	7.933316
22 - 24	9	23	207	4761	1.361728	12.25555
24 - 26	12	25	300	7500	1.39794	16.77528
26 - 28	7	27	189	5103	1.431364	10.01955
28 - 30	7	29	203	5887	1.462398	10.23679
TOTAL	42		1044	26258		58.49923
N	42
	1044
	26258
	24.8571
	617.8776
	625.1905
VARIANCE	7.3129
S.D	2.7042
	58.4992
	1.3928
G.M	24.7059
G