Matthew E. Jurek Week 9: Difference between revisions
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(→Sanity Check: bonferroni correction) |
(→Sanity Check: prepped next set of questions) |
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##t90= 1 | ##t90= 1 | ||
##t120= 0 | ##t120= 0 | ||
#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? (These are more realistic values for the fold change cut-offs because it represents about a 20% fold change which is about the level of detection of this technology.) | |||
#Perform this correction and determine whether and how many of the genes are still significantly changed at p < 0.05 after the Bonferroni correction. | #Perform this correction and determine whether and how many of the genes are still significantly changed at p < 0.05 after the Bonferroni correction. | ||
##t15= 0 | ##t15= 0 |
Revision as of 18:30, 2 April 2013
Sanity Check
- How many genes have p value < 0.05?
- t15= 385
- t30= 544
- t60= 434
- t90= 231
- t120= 190
- What about p < 0.01?
- t15= 81
- t30= 108
- t60= 87
- t90= 28
- t120= 34
- What about p < 0.001?
- t15= 8
- t30= 10
- t60= 6
- t90= 5
- t120= 4
- What about p < 0.0001?
- t15= 0
- t30= 1
- t60= 1
- t90= 1
- t120= 0
- 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? (These are more realistic values for the fold change cut-offs because it represents about a 20% fold change which is about the level of detection of this technology.)
- Perform this correction and determine whether and how many of the genes are still significantly changed at p < 0.05 after the Bonferroni correction.
- t15= 0
- t30= 0
- t60= 0
- t90= 0
- t120= 0