By definition of the mean, the following relationship must hold: The sum of all values in the data must equal…

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## Hypothesis Analysis Explained

If the answer is Yes then use Z statistics, otherwise use Student T statistics. Each of the test statistics have…

Continue Reading## Should you even do a hypothesis test?

Or, to elaborate slightly, “no, you should look at effect sizes and the precision of your estimate”.Let’s look at what…

Continue Reading## Statistics for Data Scientists in 5 mins

This means that alpha level of 1% requires more statistical evidence than 5%.Why is 5% used as significance level so…

Continue Reading## Using Database models in Python and Django

If you are insterested in view how it looks the migration code in plain SQL, you can use the sqlmigrate…

Continue Reading## How people from different cities interact in the freeCodeCamp chatrooms

Applying this to our scenario, if the probability of the mentions coming from the same distribution is below a threshold…

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