Adding Error Bars to Bar Graph | Biodegradable Mulch, Analyzing Research Articles and Statistical Data

On the last page we learned what Standard Deviation and Standard Error are and how to calculate them. Now we are going to take that knowledge a step further and put it into practice by incorporating the data into bar graphs. If you are unfamiliar with how to create a bar graph, please visit or revisit the Buffalo Grass Field Data: Scoring and Data Analysis lesson. Otherwise continue on to the next video where Kristina will go over how to add error bars to a bar graph.

If you are having trouble viewing the video click on Adding Error Bars

Once you have watched the video click on Data, to retrieve a different data set to try and make a figure of your own. Once you have created your own figure, answer the questions below see how well you did at creating a figure with error bars.

Quiz

Question

Using the image above or attached which figure should be the most correct option if you calculated Standard Deviation and Standard Error correctly?

Figure 1

Figure 2

Figure 3

If done correctly this figure is the correct answer!

Figure 4

Looks Good! If done correctly this figure is the correct answer!

Question

Looking at the same image, in Figure 4 which date of data collection yielded the most consistent/least amount of error?

Immediately after

After 6 months

After 12 months

Looks Good!

Congrats! You're done with this lesson! You've learned about the structure of academic articles, compared standard devidation and standard error, created a bar graph, and drawn conclusions about the data.