We at askmath believe that educational material should be free for everyone. Please use the content of this website for indepth understanding of the concepts. Additionally, we have created and posted videos on our youtube.
We also offer One to One / Group Tutoring sessions / Homework help for Mathematics from Grade 4th to 12th for algebra, geometry, trigonometry, precalculus, and calculus for US, UK, Europe, South east Asia and UAE students.
Affiliations with Schools & Educational institutions are also welcome.
Please reach out to us on [email protected] / Whatsapp +919998367796 / Skype id: anitagovilkar.abhijit
We will be happy to post videos as per your requirements also. Do write to us.
Step Deviation : Sometimes, during the application of the shortcut method for finding the mean, the deviation d, are divisible by a common number ‘h’ .In this case the di = xi – A is reduced to a great extent as di becomes di / h. So the formula of mean by this is :variate  





Frequency  







































N = Σ fi = 322  
Class interval  




Number of workers  




Class intervals  Mid values (xi)  Frequency (fi)  di = xi  25  ui = (xi  25) / 10  fi ui 





























20 
N = Σ fi = 50  4 
RussiaUkraine crisis update  3rd Mar 2022
The UN General assembly voted at an emergency session to demand an immediate halt to Moscow's attack on Ukraine and withdrawal of Russian troops.