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——————, , TERPRETATION, 198 UNIT VI: STATISTICAL 7OOLS AND IN, , Here N =70 Nau:, M= Size of (=) te, , ae of(2) th item = Size of 35th item, = Siz 7, , roup 40250, hence median clases AUo8, , 35th item falls in the g, L, =40, cf =31, Toe, , N, rh, 2 x1, , , , Me=L,+, 35=31 10=40+ 2, =40+{ - } E, , =40+8=48, -. Median is 48, , 9.3 CALCULATION OF MEDIAN IN SPECIFIC CASES, , Let us study computation of median in some special cases, where some, , required before median is calculated., , 9.3.1 Calculation of Median in a Cumulative Frequency Distribution, , If cumulative frequency is given, then the series will be converted into simplett, kinds of cumulative frequency series would be ‘less than’ or more than!, , conversion discussed in section 4.6.2 in chapter 4)., , Once simple frequency series is obtained, further steps are the same as dis, section 9.2.3 of this chapter) to calculate median in continuous senes:, , For example,, , ILLUSTRATION 9 Calculate median from the following data :, , STATISTICS FOR ECONOMICS-*!