(Solved): Refer to the frequency distribution and find the standard deviation by using the formula s=n(n1) ...

Refer to the frequency distribution and find the standard deviation by using the formula $$s=\sqrt{\frac{n\left[?\left(f?x^2\right)\right]?{\left[?(f?x)\right]}^2}{n(n?1)}}$$, where $$x$$ represents the class midpoint, $$f$$ represents the class frequency, and $$\mathrm{n}$$ represents the total number of sample values. Compare this value with the standard deviation found using the original list of data values, 65.6. $$s=(1000\text{ cells/?L) }$$