diff --git a/.DS_Store b/.DS_Store
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index 0000000..1da0ecb
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diff --git a/EXAMEN1_TDA_Carlos_Ibarra.pdf b/EXAMEN1_TDA_Carlos_Ibarra.pdf
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index 0000000..a49558f
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diff --git "a/Examen1/Primer examen parcial Grupo B Oto\303\261o 2020.pdf" "b/Examen1/Primer examen parcial Grupo B Oto\303\261o 2020.pdf"
index bdc8c9b..ae9e790 100644
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diff --git a/Examen1/data.csv b/Examen1/data.csv
new file mode 100644
index 0000000..a6eeb05
--- /dev/null
+++ b/Examen1/data.csv
@@ -0,0 +1,51 @@
+,0
+0,5.077850806
+1,5.11361086
+2,5.013413304
+3,4.7066951
+4,4.976198376
+5,4.687136226
+6,5.124400784
+7,5.091652721
+8,4.626762324
+9,5.35344503
+10,5.031065345
+11,4.162632474
+12,5.099215149
+13,4.314255758
+14,5.071030028
+15,5.146366446
+16,5.286848671
+17,5.132360742
+18,5.04395336
+19,5.636707268
+20,4.777943651
+21,4.89574049
+22,5.169317399
+23,4.893662278
+24,4.417269492
+25,5.076816536
+26,4.955695648
+27,4.815426492
+28,5.126990887
+29,5.111338314
+30,5.478111414
+31,4.925767003
+32,5.042099781
+33,4.676226811
+34,5.079265995
+35,4.424209541
+36,5.028716159
+37,4.933538801
+38,4.978475742
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+45,4.903235874
+46,5.202417898
+47,5.190025396
+48,5.076624563
+49,4.501765132
\ No newline at end of file
diff --git "a/Primer examen parcial Grupo B Oto\303\261o 2020.pdf" "b/Primer examen parcial Grupo B Oto\303\261o 2020.pdf"
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index 0000000..ae9e790
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diff --git a/TDA_Statistic.c b/TDA_Statistic.c
new file mode 100644
index 0000000..26dfb1a
--- /dev/null
+++ b/TDA_Statistic.c
@@ -0,0 +1,79 @@
+//
+//  TDA_statistic.c
+//
+//
+//  Created by Carlos Ibarra on 08/10/2020.
+//
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "central.h"
+#include "dispersion.h"
+
+int main (void){
+
+  int i=0; //index para crear array
+  int ancho_clase; //para histograma
+  int n; //numero de datos
+  
+  FILE * fp; //abre .csv
+  float array1[100]; //arreglo con los datos del archivo sin ordenar
+  float x; //ayudante para lectura de file
+
+  //estadisticos
+  float media1, mediana1, moda1, desviacion1, rango1, intercuartil1;
+  float array2[100]; //arreglo ordenado;
+
+  //Leer datos
+  fp = fopen ("data.csv", "r");
+  if (fp != NULL){
+   
+    while (fscanf (fp, "%f", &x)==1){
+      array1[i] = x;
+      i++;
+    }
+    fclose (fp);
+  }
+
+  //Aqui se ordena el arreglo
+  //array2 = array1 ordenado
+
+  n = sizeof(array2)/sizeof(array2[0]);
+  
+  //Medidas de tendencia central
+  media1 = media (array2, n);
+  mediana1 = mediana (array2, n);
+  moda1 = moda (array2, n);
+  //Medidas de dispersion
+  desviacion1 = desviacion (array2, n);
+  rango1 = rango (array2, n);
+  intercuartil1 = intercuartil (array2, n);
+
+  printf("Ancho de clase: ");
+  scanf("%d",&ancho_clase);
+
+  //histograma (array2); 
+
+  //Guardar datos
+  fp = fopen ("data_statistics.csv", "w");
+  
+  fprintf(fp, "media: &.2f", media1);
+  fprintf(fp, "mediana: &.2f", mediana1);
+  fprintf(fp, "moda: &.2f", moda1);
+  fprintf(fp, "desviacion: &.2f", desviacion1);
+  fprintf(fp, "rango: &.2f", rango1);
+  fprintf(fp, "distancia intercuaritil: &.2f", intercuartil1);
+  fclose(fp);
+
+  //Segundo archivo, con datos de histograma, para graficar
+  //fp = fopen ("data_graphics.csv", "w");
+  //fprintf (informacion de clases del histograma);
+  //fclose(fp);
+
+  //pipe a gnuplot
+  /*pipe = popen("gnuplot -persist");
+  fprintf(pipe, "plot data_graphics.csv with lines");
+  pclose(pipe);
+}*)
+  
diff --git a/central.c b/central.c
new file mode 100644
index 0000000..5221099
--- /dev/null
+++ b/central.c
@@ -0,0 +1,52 @@
+//
+//  central.c
+//
+//
+//  Edited Created by Carlos Ibarra on 08/10/2020.
+//
+
+#include <stdio.h>
+#include "dispersion.h"
+
+#define central_IMPORT
+
+float suma (float array2[], int n){
+
+  int i;
+  float suma = 0;
+
+  for (i = 0; i< n; i++)
+    {
+      suma = suma + array2[i];
+    }
+  return suma;
+}
+
+float media (float array2[], int n){
+
+  float media;
+  media = suma (array2, n);
+  media = media /n;
+  return media;
+}
+      
+float mediana (float array2[], int n){
+
+  int i;
+  float med;
+  if (n%2 == 0)
+    {
+      med = array2[n/2];
+    }
+  else
+    med= array2[n/2 + 1];
+
+  return med;
+}
+
+float moda (float array2[], int n){
+
+  //por el momento regresaremos el dato en la posicion n/2
+  return array2[n/2];
+}
+  
diff --git a/central.h b/central.h
new file mode 100644
index 0000000..f0576f1
--- /dev/null
+++ b/central.h
@@ -0,0 +1,32 @@
+//
+//  central.h
+//
+//
+//  Created by Carlos Ibarra on 08/10/2020.
+//
+
+#ifndef central_H
+#def central_H
+
+#include <stdio.h>
+
+#ifdef central_IMPORT
+#def EXTERN
+#else
+#def EXTERN extern
+#endif
+
+float suma (float array2[], int n);
+
+float media (float array2[], int n);
+//Funcion que calcula la media y la regresa
+      
+float mediana (float array2[], int n);
+//Funcion que calcula la mediana y la regresa
+
+float moda (float array2[], int n);
+//Funcion que calcula la moda y la regresa
+
+#undef central_IMPORT
+#undef EXTERN
+#endif
diff --git a/data.csv b/data.csv
new file mode 100644
index 0000000..2acf3e1
--- /dev/null
+++ b/data.csv
@@ -0,0 +1,30 @@
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+30
+29
+28
+27
+26
+25
+24
+23
+22
+21
\ No newline at end of file
diff --git a/dispersion.c b/dispersion.c
new file mode 100644
index 0000000..626a906
--- /dev/null
+++ b/dispersion.c
@@ -0,0 +1,37 @@
+//
+//  dispersion.c
+//
+//
+//  Created by Carlos Ibarra on 08/10/2020.
+//
+
+#include <stdio.h>
+#include <math.h>
+
+#define dispersion_IMPORT
+
+float desviacion (float array2[], int n){
+
+  int i;
+  float suma = 0;
+  for (i=0; i <n; i++){
+
+    suma = suma + ((array2[i] - media) * (array2[i] - media));
+  }
+  suma = suma / n;
+  suma = sqrt (suma);
+  return suma;
+}
+    
+float rango (float array2[], int n){
+
+  float ran;
+  ran = array2[n] - array2[0];
+  return ran;
+}
+
+float intercuartil (float array2[], int n){
+
+  //por el momento se regresa la ultima posicion
+  return array2[n];
+}
diff --git a/dispersion.h b/dispersion.h
new file mode 100644
index 0000000..67f65ac
--- /dev/null
+++ b/dispersion.h
@@ -0,0 +1,31 @@
+//
+//  dispersion.h
+//
+//
+//  Created by Carlos Ibarra on 08/10/2020.
+//
+
+#ifndef dispersion_H
+#def dispersion_H
+
+#include <stdio.h>
+#include <math.h>
+
+#ifdef dispersion_IMPORT
+#def EXTERN
+#else
+#def EXTERN extern
+#endif
+
+float desviacion (float array2[], int n);
+//Funcion que calcula la desviacion y la regresa
+      
+float rango (float array2[], int n);
+//Funcion que calcula el rango y lo regresa
+
+float intercuartil (float array2[], int n);
+//Funcion que calcula la la distanicia intercuartil y la regresa
+
+#undef dispersion_IMPORT
+#undef EXTERN
+#endif