[R] Comparing two populations based on the percentile values calculated from two independent samples

[John Sorkin]

Mohamed,
You probably should seek the help of a local statistician, and should read about Pearson's chi square test and Fisher's exact test.
John


John David Sorkin M.D., Ph.D.
Professor of Medicine
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology and Geriatric Medicine
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing) 
>>> "Mohamed A.Abdel-Fattah Mansour via R-help" <r-help at r-project.org> 09/24/15 2:42 PM >>>
Dear AllI Have the data for two samples drawn from two different populations
| 

| 

| 

| 

| 

| Percentiles

|
| 

| Mean

| STD

| Min

| Max

| 5th

| 25th

| 50th

| 75th

| 95th

|
| Sample 1

| 25

| 2

| 16

| 30

| 18

| 20

| 26

| 27

| 29

|
| Sample 2

| 26

| 2.1

| 21

| 32

| 17

| 21

| 27

| 28

| 30

|


I need to test the equivalence of the two samples regarding percentiles.
Dr. Mohamed A.Abdel-Fattah Mansour Associate Prof. of Industrial Engineering Industrial Engineering Department Faculty of Engineering KKU
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