Prooving Datasets

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vcantu04

New member
Joined
Mar 23, 2005
Messages
16
Can somebody explain me how can I use Excel to suggest a distribution for a given dataset used for a process that was observed to obtain the data? I am trying to use the Chi^2 test but I got lost. This is what I have so far. I guess after that I am supposed to use som kinf of hypothesis but I don't know.

dataset
1.40621 1.40621 min value
1.69711 11.6334 max value
1.80876
2.57922
2.66224
3.13679
3.30204
3.39637
3.49726
3.53068
3.60933
3.71464
4.05363
4.26183
4.27195
4.38714
4.41074
4.74541
4.75086
4.86992
4.88932
4.93277
4.97834
5.19657
5.2954
5.2972
5.52573
5.58474
5.70171
6.0847
6.25969
6.46524
6.48953
6.58692
6.64214
6.92665
6.94268
7.09996
7.17057
7.21416
7.29702
7.30142
7.30739
7.4237
7.57517
7.66539
7.72693
7.79925
7.81941
7.85066
7.86324
7.93099
7.93929
7.95348
8.04224
8.06869
8.15099
8.18899
8.19098
8.28112
8.32037
8.38629
8.52815
8.58868
8.64845
8.68939
8.71546
8.75311
8.91062
8.91935
8.99349
9.16499
9.22254
9.274
9.29891
9.39228
9.39386
9.49924
9.51429
9.54312
9.59502
9.61294
9.63453
9.65365
9.65671
9.75129
9.7782
10.0243
10.0727
10.1136
10.2686
10.349
10.4193
10.4913
10.557
10.7766
10.8386
10.8839
11.0012
11.6334

this is what I have so far
7.3262093 mean
Bin Frequency
1.50 1.00
3.00 4.00
4.50 12.00
6.00 12.00
7.50 15.00
9.00 27.00
10.50 23.00
12.00 6.00

P(X)
0.336010346
0.122933964
0.100173429
0.08162688
0.066514121
0.054199404
0.044164688
0.194377168

E(x)
33.60103458
12.29339639
10.01734294
8.162688021
6.651412072
5.419940397
4.416468802
19.4377168
 
I don't have any info about the process, I am only interested in prooving what type of distribution could the data fit by using EXCEL. Or in other words, how can I use the Chi^2 test for prooving that a data sets follows a certain distribution.
 
Best Fit is a Whole Field of Study. Moment-Generating functions can be helpful. It is a matter of trying the right distribution and discovering that it is close or adequately representative. There is software for that sort of thing. There is NOT a brief description of how to proceed, unless you just happen to know the generating distribution.
 
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