लघु विधि द्वारा माध्य तथा मानक विचलन ज्ञात कीजिए :
`{:(x_(i),60,61,62,63,64,65,66,67,68),("f"_(i),2,1,12,29,25,12,10,4,5):}`

The Median of the following discrete series is {:(x_(i),3,6,5,8,12,7),(f_(i)"",5,2,4,6,7,6):}

The Median of the following discrete series is {:(x_(i),3,6,5,8,12,7),(f_(i)"",5,2,4,6,7,6):}

Find mean deviation about the mean for the following data : {:("x"_(i),2,5,6,8,10,12),("f"_(i),2,8,10,7,8,5):}

Find mean deviation about the mean for the following data : {:("x"_(i),2,5,6,8,10,12),("f"_(i),2,8,10,7,8,5):}

Find mean deviation about the mean for the following data : {:("x"_(i),2,5,6,8,10,12),("f"_(i),2,8,10,7,8,5):}

Find mean deviation about the mean for the following data : {:("x"_(i),2,5,6,8,10,12),("f"_(i),2,8,10,7,8,5):}

Compute the first quartile and third deciles from the following data : {:("Weekly Income (in Rs.)",58,59,60,61,62,63,64,65,66),("No. of workers",2,3,6,15,10,5,4,3,1):}

If the mean of the following distribution is 2.6., then y = . . . . {:(x_(i),1,2,3,4,5),(f_(t)"",4,5,y,1,2):}

For the following data: {:("Weekly income(in Rs.) :",58,59,60,61,62,63,64,65,66),("No. of Workers :",2,3,6,15,10,5,4,3,1):} The value of (Q_(1)+Q_(3))/(2) is equal to