Summarising Data

Please show us either your attempt to solve this, or (if you have nothing at all to show) the definitions/formulas you were given for sample mean and sample standard deviation given a grouped frequency table.

Here is why I ask for this:

Posting Guidelines (Summary)

Welcome to our tutoring boards! :) This page summarizes the main points from our posting guidelines. As our name implies, we provide math help (primarily to students with homework). We do not generally post immediate answers or step-by-step solutions. We don't do your homework. We prefer to...
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