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#1
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There are three lists of numbers under column A,B,C
Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
#2
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Consider the standard deviation
=STDEV() -- Gary''s Student - gsnu200812 "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
#3
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Does anyone have any suggestions on how to select the most stability among 3
lists? If I use STDEV(), I cannot compare which one is the most stability with different scaling. Does anyone have any suggestions? Thank everyone for any suggestions Eric "Gary''s Student" wrote: Consider the standard deviation =STDEV() -- Gary''s Student - gsnu200812 "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
#4
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Try confidence (see spreadsheet help). Use the 95% and compare rresults.
"Eric" wrote: Does anyone have any suggestions on how to select the most stability among 3 lists? If I use STDEV(), I cannot compare which one is the most stability with different scaling. Does anyone have any suggestions? Thank everyone for any suggestions Eric "Gary''s Student" wrote: Consider the standard deviation =STDEV() -- Gary''s Student - gsnu200812 "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
#5
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Thank everyone very much for suggestions
After using the function confidence (95%, 2 S.D. 100 data samples) there are the result, 0.133, 0.155, 0.137. Does it mean that data under column A will be the most stable? Do they compare like with like? since they are different set of numbers? Does anyone have any suggestions? Thank everyone very much for any suggestions Eric "Joel" wrote: Try confidence (see spreadsheet help). Use the 95% and compare rresults. "Eric" wrote: Does anyone have any suggestions on how to select the most stability among 3 lists? If I use STDEV(), I cannot compare which one is the most stability with different scaling. Does anyone have any suggestions? Thank everyone for any suggestions Eric "Gary''s Student" wrote: Consider the standard deviation =STDEV() -- Gary''s Student - gsnu200812 "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
#6
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For 95% you should be entering .05 like the VBA help indicates.
What confidience means for 0.133 is that 95% of your Normalized Value will lie on the x-axis over a span of 0.133. the smaller the number the more stable your results. 3 sigma is normally refered to as 95% which means that 95% of your measured values will be within the center of a normal curve. 6 Sigma results which is 98% is better results. 6 Sigma will have a smaller confidence number. What we are doing is looking only at 95% of the data and throwing the rest away and then seeing how the 95% of the data compares between the three differrent sets of data. You may want to run the data at 90% and compare the 90% results to the 95% results. "Eric" wrote: Thank everyone very much for suggestions After using the function confidence (95%, 2 S.D. 100 data samples) there are the result, 0.133, 0.155, 0.137. Does it mean that data under column A will be the most stable? Do they compare like with like? since they are different set of numbers? Does anyone have any suggestions? Thank everyone very much for any suggestions Eric "Joel" wrote: Try confidence (see spreadsheet help). Use the 95% and compare rresults. "Eric" wrote: Does anyone have any suggestions on how to select the most stability among 3 lists? If I use STDEV(), I cannot compare which one is the most stability with different scaling. Does anyone have any suggestions? Thank everyone for any suggestions Eric "Gary''s Student" wrote: Consider the standard deviation =STDEV() -- Gary''s Student - gsnu200812 "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
#7
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You can use Stdev - Standard Deviation as a simple method.
A better method is to use NORMDIST which uses the Standard Deviation to calculate the width of the Normalized curve. The width of the normalized curve is oftern refer to by the Term sigma. 3 sigma would indicate 95 percent of the results where inside th enormalized curve. 6 sigma is something like 98%. "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
#8
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Yours is perhaps a different sigma from that usually used. The percentage
between the -3 sigma and +3 sigma points is about 99.73% Try =NORMSDIST(3)-NORMSDIST(-3) -- David Biddulph "Joel" wrote in message ... You can use Stdev - Standard Deviation as a simple method. A better method is to use NORMDIST which uses the Standard Deviation to calculate the width of the Normalized curve. The width of the normalized curve is oftern refer to by the Term sigma. 3 sigma would indicate 95 percent of the results where inside th enormalized curve. 6 sigma is something like 98%. "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
#9
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You are right. I was thinking of 1 Sigma being +/-1 which is 95%.
"David Biddulph" wrote: Yours is perhaps a different sigma from that usually used. The percentage between the -3 sigma and +3 sigma points is about 99.73% Try =NORMSDIST(3)-NORMSDIST(-3) -- David Biddulph "Joel" wrote in message ... You can use Stdev - Standard Deviation as a simple method. A better method is to use NORMDIST which uses the Standard Deviation to calculate the width of the Normalized curve. The width of the normalized curve is oftern refer to by the Term sigma. 3 sigma would indicate 95 percent of the results where inside th enormalized curve. 6 sigma is something like 98%. "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
#10
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I think you're still misremembering.
Joel wrote: You are right. I was thinking of 1 Sigma being +/-1 which is 95%. "David Biddulph" wrote: Yours is perhaps a different sigma from that usually used. The percentage between the -3 sigma and +3 sigma points is about 99.73% Try =NORMSDIST(3)-NORMSDIST(-3) -- David Biddulph "Joel" wrote in message ... You can use Stdev - Standard Deviation as a simple method. A better method is to use NORMDIST which uses the Standard Deviation to calculate the width of the Normalized curve. The width of the normalized curve is oftern refer to by the Term sigma. 3 sigma would indicate 95 percent of the results where inside th enormalized curve. 6 sigma is something like 98%. "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 -- Dave Peterson |
#11
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+/- 2 sigma (not 1) is pretty close to 95%
=NORMSDIST(2)-NORMSDIST(-2) -- David Biddulph "Joel" wrote in message ... You are right. I was thinking of 1 Sigma being +/-1 which is 95%. "David Biddulph" wrote: Yours is perhaps a different sigma from that usually used. The percentage between the -3 sigma and +3 sigma points is about 99.73% Try =NORMSDIST(3)-NORMSDIST(-3) -- David Biddulph "Joel" wrote in message ... You can use Stdev - Standard Deviation as a simple method. A better method is to use NORMDIST which uses the Standard Deviation to calculate the width of the Normalized curve. The width of the normalized curve is oftern refer to by the Term sigma. 3 sigma would indicate 95 percent of the results where inside th enormalized curve. 6 sigma is something like 98%. "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
#12
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For NORMDIST(x,mean,standard_dev,cumulative), could you please tell me where
to locate the sample of data for measurement? Thank everyone very much for any suggestions Eric "David Biddulph" wrote: Yours is perhaps a different sigma from that usually used. The percentage between the -3 sigma and +3 sigma points is about 99.73% Try =NORMSDIST(3)-NORMSDIST(-3) -- David Biddulph "Joel" wrote in message ... You can use Stdev - Standard Deviation as a simple method. A better method is to use NORMDIST which uses the Standard Deviation to calculate the width of the Normalized curve. The width of the normalized curve is oftern refer to by the Term sigma. 3 sigma would indicate 95 percent of the results where inside th enormalized curve. 6 sigma is something like 98%. "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
#13
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If this is similar to your other question about the CONFIDENCE function, you
could use =NORMDIST(x,AVERAGE(range),STDEV(range),cumulative ), but you need to remember that NORMDIST is telling you the shape of the distribution if you know that the population has a Normal distribution with a particular mean and standard deviation, but if you have a sample of data it may or may not have a Normal distribution. If, for example, your data is produced from the RAND() function, which gives a uniform distribution, the NORMDIST function isn't going to tell you anything very meaningful about that population. It is wise to understand the statistical theory you are using before you start trying to use the Excel functions. -- David Biddulph "Eric" wrote in message ... For NORMDIST(x,mean,standard_dev,cumulative), could you please tell me where to locate the sample of data for measurement? Thank everyone very much for any suggestions Eric "David Biddulph" wrote: Yours is perhaps a different sigma from that usually used. The percentage between the -3 sigma and +3 sigma points is about 99.73% Try =NORMSDIST(3)-NORMSDIST(-3) -- David Biddulph "Joel" wrote in message ... You can use Stdev - Standard Deviation as a simple method. A better method is to use NORMDIST which uses the Standard Deviation to calculate the width of the Normalized curve. The width of the normalized curve is oftern refer to by the Term sigma. 3 sigma would indicate 95 percent of the results where inside th enormalized curve. 6 sigma is something like 98%. "Eric" wrote: There are three lists of numbers under column A,B,C Is there any build-in function to determine the stability within change? For example, 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On above list, there is no change at all, which is considered very stable. Does anyone have any suggestions on following lists? Thanks in advance for any suggestions Eric Under column A: 1064 1099 1116 1154 1105 1118 1092 1089 1087 1055 1057 1058 967 923 874 845 864 950 1024 971 Under column B: 845 840 887 863 865 886 851 843 825 805 818 792 711 687 677 642 642 640 681 702 Under column C: 1064 1065 1100 1129 1098 1120 1086 1084 1070 1022 1034 1003 921 883 862 843 843 882 923 905 |
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