Question
Calculate the standard deviation from the following data by Actual Mean Method?
125, 15, 23, 42, 27, 25, 23, 25 and 20
125, 15, 23, 42, 27, 25, 23, 25 and 20
✓
Answer
Deviations from actual mean.
$ \bar{X}=\frac{225}{9}=25$
$\text { SamacheerKalvi.Guru }$
$\sigma=\sqrt{\left(\frac{\sum( x -\overline{ x })^2}{ n }\right)}=\sqrt{\frac{426}{9}}=\sqrt{47.33}$
$\sigma=6.88 $
$ \bar{X}=\frac{225}{9}=25$
$\text { SamacheerKalvi.Guru }$
$\sigma=\sqrt{\left(\frac{\sum( x -\overline{ x })^2}{ n }\right)}=\sqrt{\frac{426}{9}}=\sqrt{47.33}$
$\sigma=6.88 $
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write the four methods of studying correlation?
Define “National Income & Erosion of National Wealth”?
What are the several types of Indirect taxes?
Explain economic factors capital formation?
Write the statistical problems?
Write the objectives of World Bank?
Explain the sources of collection of data?
Explain Price mechanism?
Write Gandhian plan and Bombay plan?
Define “Financial system.”?