Question

calculateX using step deviation method x​

Answer 1

Answer:

Mean = 1137

Explanation:

Individual series and discrete series fd or d alays equal to fd' or d'beacause there is no class interval so no common difference

Step deviation method :-

X. A=1000. d'=d/c

d= X-A. c=1

550. -450. -450

750. -250. -250

900. -100. -100

1020. 20. 20. N= 10 is given

850. -150. -150

1250. 250. 250

1500. 500. 500

1450. 450. 450

1500. 500. 500

1600. 600. 600

€d'=1370

Mean = A+(€d')/N×C

Mean = 1000+(1370/10)×1

Mean = 1137