initiate R scripts that used in Coursera Course
Add filter function
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Extract the subset of rows of the data frame
where Ozone values are above 31 and Temp values are above 90
Then find the mean value for Solar.R from the given subset
Add function for the question: What is the mean of Temp when Month is equal to 6?
Add function according to question: What was the maximum ozone value in the month of May (i.e. Month = 5)?
Delete filter.R
Delete sum_non_na.R
Delete hw1_data.csv