1 v/s 3 months

1 v/s 6 months

1 v/s12 months

3 v/s 6 months

3 v/s 12 months

6 v/s 12 months

Z value for difference in mean for 5 year period

P (Z <= z) one-tail

0.475976

0.451457

0.409543

0.475461

0.433122

0.457255

z Critical one-tail

1.644854

1.644854

1.644854

1.644854

1.644854

1.644854

P (Z <= z) two-tail

0.951952

0.902914

0.819086

0.950922

0.866244

0.91451

z Critical two-tail

1.959964

1.959964

1.959964

1.959964

1.959964

1.959964

Z value for difference in median for 5 year period

P (Z <= z) one-tail

0.484872

0.454429

0.429273

0.46949

0.44418

0.474491

z Critical one-tail

1.644854

1.644854

1.644854

1.644854

1.644854

1.644854

P (Z <= z) two-tail

0.969744

0.908858

0.858546

0.938979

0.88836

0.948983

z Critical two-tail

1.959964

1.959964

1.959964

1.959964

1.959964

1.959964

Z value for difference in mean for 10 year period

P (Z <= z) one-tail

0.47167

0.442195

0.388394

0.470365

0.415587

0.44449

z Critical one-tail

1.644854

1.644854

1.644854

1.644854

1.644854

1.644854

P (Z <= z) two-tail

0.943341

0.884391

0.776788

0.940729

0.831174

0.88898

z Critical two-tail

1.959964

1.959964

1.959964

1.959964

1.959964

1.959964

Z value for difference in median for 10 year period

P (Z <= z) one-tail

0.475296

0.448091

0.394484

0.47267

0.418215

0.444864

z Critical one-tail

1.644854

1.644854

1.644854

1.644854

1.644854

1.644854

P (Z <= z) two-tail

0.950593

0.896183

0.788968

0.94534

0.836431

0.889728

z Critical two-tail

1.959964

1.959964

1.959964

1.959964

1.959964

1.959964

Z value for difference in mean for 15 year period

P (Z <= z) one-tail

0.436517

0.373104

0.268005

0.434128

0.321053

0.382515

z Critical one-tail

1.644854

1.644854

1.644854

1.644854

1.644854

1.644854

P (Z <= z) two-tail

0.873034

0.746207

0.53601

0.868256

0.642107

0.76503

z Critical two-tail

1.959964

1.959964

1.959964

1.959964

1.959964

1.959964

Z value for difference in median for 15 year period

P (Z <= z) one-tail

0.437987

0.375046

0.260561

0.434685

0.311511

0.371791

z Critical one-tail

1.644854

1.644854

1.644854

1.644854

1.644854

1.644854

P (Z <= z) two-tail

0.875974

0.750093

0.521122

0.86937

0.623022

0.743582

z Critical two-tail

1.959964

1.959964

1.959964

1.959964

1.959964

1.959964