Kasey E. O'Connor Week 9 Journal
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Microarry Data Analysis
- The number of replicates for each time point in the data.
- Why is the use of the dollar sign symbols in front of the number important?"
- How many genes have p value < 0.05?
- What about p < 0.01?
- What about p < 0.001?
- What about p < 0.0001?
- How many of the genes are still significantly changed at p < 0.05 after the Bonferroni correction?
- Keeping the "Pval" filter at p < 0.05, filter the "AvgLogFC" column to show all genes with an average log fold change greater than zero. How many meet these two criteria?
- Keeping the "Pval" filter at p < 0.05, filter the "AvgLogFC" column to show all genes with an average log fold change less than zero. How many meet these two criteria?
- Keeping the "Pval" filter at p < 0.05, How many have an average log fold change of > 0.25 and p < 0.05?
- How many have an average log fold change of < -0.25 and p < 0.05?
- Find NSR1 in your dataset. Is it's expression significantly changed at any timepoint? Record the average fold change and p value for NSR1 for each timepoint in your dataset.
- Which gene has the smallest p value in your dataset (at any time point)? Why do you think the cell is changing this gene's expression upon cold shock?
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