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Standard deviation of a list

I want to find mean and standard deviation of 1st, 2nd,... digits of several (Z) lists. For example, I have 8 Answers ...
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Is it fine to have foreign key as primary key?

...n to this are tables with a one-to-one relationship, where the foreign key and primary key of the linked table are one and the same. share | improve this answer | follow ...
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to remove first and last element in array

How to remove first and last element in an array? 12 Answers 12 ...
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Which, if any, C++ compilers do tail-recursion optimization?

...t it would work perfectly well to do tail-recursion optimization in both C and C++, yet while debugging I never seem to see a frame stack that indicates this optimization. That is kind of good, because the stack tells me how deep the recursion is. However, the optimization would be kind of nice as w...
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How to disable Google Chrome auto update?

... On your Chrome browser's address bar, type in 'about:plugins' and hit ENTER. Find the plugin called 'Google Update' and click disable. Restart your browser for the changes to take effect. share | ...
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Calculating Pearson correlation and significance in Python

I am looking for a function that takes as input two lists, and returns the Pearson correlation , and the significance of the correlation. ...
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Simple logical operators in Bash

I have a couple of variables and I want to check the following condition (written out in words, then my failed attempt at bash scripting): ...
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Error in plot.new() : figure margins too large, Scatter plot

I've looked in different questions for a solution and I've tried what was suggested but I have not found a solution to make it work. ...
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Jackson enum Serializing and DeSerializer

I'm using JAVA 1.6 and Jackson 1.9.9 I've got an enum 14 Answers 14 ...
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What is the strict aliasing rule?

... ability to give aliasing warnings, sometimes giving us a friendly warning and sometimes not.) To see why this behavior is undefined, we have to think about what the strict aliasing rule buys the compiler. Basically, with this rule, it doesn't have to think about inserting instructions to refresh th...