1. Excel Lab: Boxplots Date:__________
Corn is an important animal food. Normal corn lacks certain amino acids, which are building blocks for protein. Plant scientists have developed new corn varieties that have more of these amino acids. To test a new corn as an animal food, a group of 20 one-day-old male chicks was fed a ration containing the new corn. A control group of another 20 chicks was fed a ration that was identical except that it contained normal corn. Here are the weight gains (in grams) after 21 days:   
Normal corn New corn
Source: G. L. Cromwell et al., “A comparison of the nutritive value of opaque-2, floury-2, and normal corn for the chick,” Poultry Science, 57 (1968), pp. 840–847.
The purpose of this activity is to compare the distributions of weight gain from the two corn varieties The end product will be a report, similar to a newspaper or journal article.
Process:
Use Excel to construct parallel boxplots of weight gain from the two corn varieties. Import your boxplot from Excel into a Word document .
In paragraph form,
Introduction paragraph--Describe the variable being presented in your report and classify the variable as numerical or categorical. Identify the source of the data and the sample sizes for the two corn varieties.
Body—For the parallel boxplots, summarize the data presented in the figure. Refer to the figure within the text by name, ie. Figure 1. Compare the distributions in terms of shape, center, and spread. For center and spread, select the appropriate measure and justify your selection. Formally check for outliers and identify these outliers or state that there are none. In your discussion, refer to all numerical values in terms of the context of weight gain.
Conclusion paragraph—Summarize the results you observed. Are the results what you expected? Why or why not? What questions arise from this study?
Format for Written Report:
1. The project must be typed and double-spaced using Times New Roman 12 point font.
2. Construct the boxplot in Excel and import it into your Word document.
3. Refer to the assessment sheet on the next page for additional guidance.
Submit the assignment electronically to Mr. Hepburn at by Friday, October 14. 

2. Assessment of Excel Lab: Boxplots
Component
Possible
Earned
Note
Data Display
The boxplots accurately represent the distributions. 10
The boxplot has a title (below) and a properly labeled axis. 2
Data Analysis
Describe the variable being presented in your report and classify the variable as numerical or categorical. Identify the source of the data and the sample sizes.
Refer to the figure within the text.
Describe and compare the distributions in terms of shape, center, and spread. For center and shape, select the appropriate measure and justify your selection. Formally test for outliers and identify any or state that there are none. 15
Are the results what you expected? What questions arise from the study? 3
Format
Typed, double-spaced in Times New Roman 12 point font. 1
All explanations are in paragraph form following the guidelines in the file “Format for Excel Labs.”
Tables are labeled above and graphs are labeled below.
Spelling and grammar does not affect the readability of the report.
Graphs and tables are separated by text. The report begins with text.
TOTAL 35