Editing Statistics and Statistical Programming (Winter 2017)/Problem Set: Week 2
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:'''PC6.''' Some of you will have negative numbers. Whoops! Those were not supposed to be there. Recode all negative numbers as missing (i.e. NA) in your dataset. Now create compute a new mean and standard deviation. How does it change? ('''Hint:''' the basic mean function will give you an error. You have use a named argument <code>na.rm=TRUE</code> to work around this.) | :'''PC6.''' Some of you will have negative numbers. Whoops! Those were not supposed to be there. Recode all negative numbers as missing (i.e. NA) in your dataset. Now create compute a new mean and standard deviation. How does it change? ('''Hint:''' the basic mean function will give you an error. You have use a named argument <code>na.rm=TRUE</code> to work around this.) | ||
:'''PC7.''' Log transform your dataset. Create new histograms, boxplots, and means, median, and standard deviations. | :'''PC7.''' Log transform your dataset. Create new histograms, boxplots, and means, median, and standard deviations. | ||
== Statistical Questions == | == Statistical Questions == |