# Question

Suppose that a discriminant analysis is carried out on a data set consisting of two groups. The larger group constitutes 125 observations and the smaller one 89. The relative sizes of the two groups are believed to reflect their relative sizes within the population. If the classification summary table indicates that the overall percentage of correct classification is 57%, would you use the results of this analysis? Why or why not?

## Answer to relevant Questions

Find the median, the inter-quartile range, and the 45th percentile of the following data. 23, 26, 29, 30, 32, 34, 37, 45, 57, 80, 102, 147, 210, 355, 782, 1,209 Find the mean, mode, and median for the data set 7, 8, 8, 12, 12, 12, 14, 15, 20, 47, 52, 54 Check the applicability of Chebyshev's theorem and the empirical rule for the data set in problem 1-13. In problem 128, 121, 134, 136, 136, 118, 123, 109, 120, 116, 125, 128, 121, 129, 130, 131, 127, 119, 114, 134, 110, 136, ...Identify each of the variables with one factor only. Also find the communality of each variable. Why should you use a holdout data set and try to use the discriminant function for classifying its members? How would you go about doing this?Post your question

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