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True or False: if df is a dataframe, then the command
df["ThisColumn"] = 50
will create the column "ThisColumn" in the dataframe, if it doesn't already exist. It will also set all of the values in that column equal to 50.
Which one or more of the following are the formal steps in Exploratory Data Analysis (EDA)?
Which one or more of the following regex patterns will match the entire string:
abc123xyz
You have read in the Iris data into a dataframe called irisDF. The dataframe has columns that include: "sepal_length", "sepal_width", and "species". There are 3 different species. What will the following code will create?
for this_species in irisDF["species"].unique(): plt.plot(irisDF.loc[irisDF["species"].str.match(this_species),"sepal_length"], irisDF.loc[irisDF["species"].str.match(this_species),"sepal_width"])plt.xlabel("sepal_length")plt.ylabel("sepal_width")plt.show()
Given this dataframe called df, which command will retrieve "Tom" (and only "Tom")?
In a normal distribution, what percentage of the data will be found within 2 standard deviations of the mean?
You have a dataframe with categorical data in a column that has some NaN's. Assuming that the column does not already contain the value "Unknown", replacing the NaN's with the value "Unknown" is a reasonable approach.
We can create a subset of data by using regex on categorical data using the Pandas .str.match() command
Distributions with which type of kurtosis will most likely have more outliers than normal?
You have this dataframe called df:
After the operation
b = df + 5
b equals which of the options below