diff --git a/module2/exo2/exercice_en.Rmd b/module2/exo2/exercice_en.Rmd
index abcef555b37b8a8634daaa50abc32c6031a35a3f..60069afc01a071b0e27f88dcb2acdf276896d311 100644
--- a/module2/exo2/exercice_en.Rmd
+++ b/module2/exo2/exercice_en.Rmd
@@ -1,5 +1,5 @@
 ---
-title: "Doing a simple calculation on your own"
+title: "Data visualization"
 author: "Gkiouzepi Eleni"
 date: "24/7/2021"
 output: html_document
@@ -9,41 +9,23 @@ output: html_document
 knitr::opts_chunk$set(echo = TRUE)
 ```
 
-
 ## Data set:
 
 ```{r}
 x <- c(14.0, 7.6, 11.2, 12.8, 12.5, 9.9, 14.9, 9.4, 16.9, 10.2, 14.9, 18.1, 7.3, 9.8, 10.9,12.2, 9.9, 2.9, 2.8, 15.4, 15.7, 9.7, 13.1, 13.2, 12.3, 11.7, 16.0, 12.4, 17.9, 12.2, 16.2, 18.7, 8.9, 11.9, 12.1, 14.6, 12.1, 4.7, 3.9, 16.9, 16.8, 11.3, 14.4, 15.7, 14.0, 13.6, 18.0, 13.6, 19.9, 13.7, 17.0, 20.5, 9.9, 12.5, 13.2, 16.1, 13.5, 6.3, 6.4, 17.6, 19.1, 12.8, 15.5, 16.3, 15.2, 14.6, 19.1, 14.4, 21.4, 15.1, 19.6, 21.7, 11.3, 15.0, 14.3, 16.8, 14.0, 6.8, 8.2, 19.9, 20.4, 14.6, 16.4, 18.7, 16.8, 15.8, 20.4, 15.8, 22.4, 16.2, 20.3, 23.4, 12.1, 15.5, 15.4, 18.4, 15.7, 10.2, 8.9, 21.0)
 ```
 
-## Exercice 02-2
-
-### 1. What is the average ?
+## Sequence Plot
 
 ```{r}
-round(mean(x), digits=2)
+plot(x, type="l", col="blue", xlim = c(0,100), ylim=c(0,25), xaxs = "i", yaxs = "i", xlab="",ylab="", tck = 0.02)
+grid(nx = 5, ny = 5, col = "lightgray", lty = "dotted",
+     lwd = par("lwd"), equilogs = TRUE)
 ```
- 
-### 2. What is the minimum ?
 
-```{r}
-round(min(x), digits=2)
-```
- 
-### 3. What is the maximum ?
+## Histogram
 
 ```{r}
-round(max(x), digits=2)
-```
- 
-### 4. What is the median ?
+hist(x,  breaks=seq(min(x),max(x),l=11), col="blue", xlim = c(0,25), ylim=c(0,25), xaxs = "i", yaxs = "i",main="", xlab="",ylab="", tck = 0.02)
 
-```{r}
-round(median(x), digits=2)
-```
- 
-### 5. What is the standard deviation ?
-
-```{r}
-round(sd(x), digits=2)
 ```