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# ANOVA Test for a Significant Difference Between Samples

BELOW IS DATA COLLECTED OVER A PERIOD OF 15 DAYS

Day 1 6.6
Day 2 5.2
Day 3 6.6
Day 4 5.5
Day 5 7.2
Day 6 4.8
Day 7 2.3
Day 8 7.8
Day 9 7.6
Day 10 7.5
Day 11 6.6
Day 12 5.2
Day 13 6.6
Day 14 5.5
Day 15 7.2

QUESTION
Divide your data in half, your first 8 observations and your last 7 observations. Then use ANOVA to test to see if there is a significant difference between the two halves of your data.
http://statpages.org has several ANOVA calculators including this one, http://members.aol.com/johnp71/anova1sm.html

#### Solution Preview

Please the attached Word file for complete solutions with screenshots. The text below is included in the Word file.

First of all, if we are to use the link that you've suggested we will need the following pieces of information:
- sample size for both groups (you've set it at 8 for sample 1 and 7 for sample 2)
- mean for each sample
- standard deviation for each sample

Day 1 ...

#### Solution Summary

The solution shows detailed steps of performing ANOVA analysis given a data sample. Freely available calculators that can be used by going to specific webpages are used, with screenshots provided in the solution to guide the student.

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