int count; /* max - min. */
};
+
+/* T-TEST private data */
+struct t_test_proc
+ {
+ double mean;
+
+ /* Population std. deviation */
+ double std_dev;
+
+ /* Sample std. deviation */
+ double s_std_dev;
+
+ /* count */
+ double n;
+
+ double sum;
+
+ /* Sum of squares */
+ double ssq;
+
+ /* Std Err of Mean */
+ double se_mean;
+
+ /* Sum of differnces */
+ double sum_diff;
+
+ /* Mean of differences */
+ double mean_diff ;
+ };
+
+
/* FREQUENCIES private data. */
enum
{
struct sort_cases_proc srt;
struct matrix_data_proc mxd;
struct match_files_proc mtf;
+ struct t_test_proc t_t;
}
p;
};