Marks are given in x-y range like this: 20-30, 30-40, 40-50, 50-60, 60-70 and the corresponding no. of students for each distribution are 14, 25, 36, 11 and 14 respectively. only this data is given. please solve and give a detailed answer. thanks.
2007-01-07 19:50:07 · 2 answers · asked by Jagdeep g 1 in Science & Mathematics ➔ Mathematics
fixiuifiui
1425-2-2856-11222414
2535-1-2525-252539
36450000075
115511111111186
146522856112224100
1000-14148-14484
m1'=-1.4
m2'=148
m3'=-140
m4'=48400
m1 = 0
m2 = 146.04
m3 = 476.112
m4 = 49344.9552
B1 = m3^2 / m2^3 = 0.072778447
B2 = m4 / m2^2 = 2.313657721
mean = 43.6
median=43.05555556
mode = 43.05555556
Karl Pearson Coefficient = 0.00372805
2007-01-07 20:21:00 · answer #1 · answered by The Potter Boy 3 · 0⤊ 0⤋
this is a statistics problem
20-30 14
30-40 25
40-50 36
50-60 11
60-70 14
the coefficient of skewness may be found at the following site.
2007-01-08 03:59:50 · answer #2 · answered by beanie_boy_007 3 · 0⤊ 0⤋