I have used 7 items namely: Withdrawing Money; Transferring Money; Shopping Utility Bills, Insurance Premium, Mobile and Dish TV ; School/Admission/Entrance fees ; Buying education institutions prospectus or brochures and Buying bus/train/air/movie tickets measured them as 1=Use and 2=Not use from 600 respondents. Can I use the data set to compute mean and plot a line graph.
VARIABLES. Here you have 7 variables, x1, x2, ..., x7. The objective is to find the mean of each variable. The data is in discrete or binary form. Assume your definition of the binary is: 1 = use and 0 = non-use.
MEAN OF DISCRETE DATA may be calculated in two steps. First, determine the value of probability of success by using the Laplace rule of success by:
P = (s + 1) / (n + 2)
s = all counts of 1 (use) and n = 600.
The probability of not use or probability of failure is: Q = 1 - P.
In the second step, find the mean or average by:
X(mean) = nP
Standard deviation is simply:
S = sqrt(nPQ)
Significant test may be calculated by the DeMoivre-Laplace Theorem:
Zobs = (Xs - nP) / sqrt(nPQ)
where Xs = s or total counts of 1 scores.
Take the observe Z and go the Z table to find the % probability or F(Z).
http://users.stat.ufl.edu/~athienit/Tables/Ztable.pdf
Thank You for your reply Paul Louangrath I appreciate your time in answering my question.
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