Question

Following data represents the amount of wage (salary) earned by a worker during a week Rs 250, Rs 275, Rs. 300, Rs 225, Rs 240, Rs 350. The range of his salary during this week is:​

Answer 1

Answer:

Step-by-step explanation:

Wages  x  

i

​

  f  

i

​

  f  

i

​

x  

i

​

  (x−  

x

)  (x−  

x

)  

2

   

125−175  150  2  300  −124.65  15537.6225  

175−225  200  22  4400  −74.65  5572.6225  

225−275  250  19  4750  −24.65  607.6225  

275−325  300  14  4200  25.35  642.6225  

325−375  350  3  1050  75.5  5677.6225  

375−425  400  4  1600  125.35  15712.6225  

425−475  450  6  2700  175.35  30747.6225  

475−525  500  1  500  225.35  50782.6225  

   ∑f  

i

​

=71  ∑f  

i

​

x  

i

​

=19500    ∑(x−  

x

)  

2

=125280.98  

x

=  

∑f  

i

​

 

∑f  

i

​

x  

i

​

 

​

=  

71

19500

​

=274.65