What does it signify if standard deviation becomes greater than mean?

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How to determine LOD values?

I am performing fluorescence experiments using a ligand to detect metal ions. I want to determine the Lowest Detection Limit (LOD) using the formula LOD = 3σ / K. However, I'm uncertain about...

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What sustainable strategies can European luxury brands adopt to effectively expand their market presence in Asia?

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15 July 2024 4,130 0 View

Facing issues when analyzing raw LC-MS/MS data with MS-DIAL?

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14 June 2024 2,492 1 View

For how much time single cell of Xanthomonas oryzae can be alive at room temperature in nutrient deficient condition?

20 May 2024 3,673 1 View

What is the dilution rate? How can it be calculated during semi continuous cultivation?

In a semicontinuous cultivation strategy, how to calculate the dilution rate? Is the dilution rate is same as the renewal rate? What are the parameters required during this cultivation?

17 May 2024 4,291 0 View

Black dots on ebeam evaporated Titanium/Gold Ti/Au 20/300nm films?

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19 March 2024 280 1 View

Recommended molecular weight of PVP for electrospinning?

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05 March 2024 3,066 0 View

I need Articles for this topic " Hyperspectral Estimation of Coal-derived organic carbon contents in the soil of coal mining areas" please suggest me?

I am looking for Articles related to above mentioned title. Your Assistance will be highly appreciated.

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Western Blot protocol??

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How to stabilize overexpressed Protein?

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Which test should be used to study association among demographic profile and awarness level?

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02 August 2024 2,420 3 View

Why 3 replicates for most biological assays? Is it enough to examine the data fits normal distribution?

Just bounced on me. Before statistically analysing significant difference, shouldn't we see if data fits normal distribution first? Is 3 replicates enough to testify the hypothesis of normal...

31 July 2024 8,141 13 View

Normality assumption for linear regression is The assumption of normality is whether for residual errors or predictor variavble?

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31 July 2024 6,164 3 View

What change would occur in physics if the three different sizes of the proton and the two sizes of the deuteron accepted as new physical constants?

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28 July 2024 7,823 1 View

Standard curve of H2O2?

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26 July 2024 3,460 2 View

Getting standard errors and T-statistics for Dynamic panel data with instrumental variable method?

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22 July 2024 4,588 1 View

How to test multivariate outlier in STATA?

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Chi-square test for allele distribution?

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17 July 2024 998 2 View

Validated HPLC method for the estimation of the Amphotericin B ?

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How to analyse response rates of a questionnaire?

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Walter Renn

Hi Nisha,

when a probability distribution is positively skewed and he right wing is very wide , the problem you described occurs . logarithm is often used to make the distribution normal, but that only works if the skewness is not too large .

best regards Walter

Otto Raabe

The result is not statistically significant. There is no basis for assuming a meaningful phenomena..

Alex Gilgur

All it means is that signal to noise ratio is very low. Any unbiased distribution with a standard devitation defined will have standard deviation (>0) greater than mean (=0).