Question

- consider the following table class F 8-12 6 13-17 4 18-22 5 23-27 5 1) Classify this table. 2) Find the arithmetic mean by using classical method. 3) Find the Median of these classes, 4) Find the Mod by using approximate method. 5) Sketch the frequency curve. 1 Add File Diana 06:22 EN imo imo آیا به ای۳۰۳۰

Answer 1

class frequency 8-12 G 13-17 4 18-22 5. 23 - 27 5 Z N=20 1) given table shows the frequency distribution To find air thematic mean. Gl. pid point fi Lcf xifi 7.5-12.5 lo 6 6 60 12.5-17.5 IS 4 lo GO 17.5-22.5 20 خی 15 100 22.5-275 25 5 20 125 20 345 aid the matic mean CFDs Exifi N = 345 = 17.25 CSScanned with CamScanner

3) To find medion of classos. median = l + N/2* c) h da low or limit of the median class f = frequency of the prodion class h = class width of median class cu lef of promedion class. hero NI2 - 2012 =.10 hene median class 15 12:5-17.5 1 = 12.5 f = 4,5-5, C=6 predian= 12.5 12.5 t ( to 6) XS 4 - 125+ 4 X5 4 Alodian - 17.5 4) to find out mode. mode = lt (fm It (fm - fi) h 2 fm - f-f2 d= low or limit of the model class. h= class width of the model class Im = frequency of model closs F = too quency of promoday closi f2= frequency of post model class. : d= 7.5, fm = 6, F1=0 ,12=4, has 7.5+ 7:59+30 - 11.25ñ 11 8 mode = 7.5+ 6-0 x 5 276 - 4 CSScanned with CamScanner