BADM 211 Midterm Review (practice questions with correct answers).

BADM /




211
/ /




Midterm
/ /




Review
/ /




(practice questions with correct answers)
/ // // // // //




What //is //the //output //of //the //following //lines //of //code: //

word //= //"BADM"

word //= //211

print(word) //- //CORRECT //ANSWERS(S)✔✔211



What //will //the //result //of //the //following //code?

2 //* //"3.0" //- //CORRECT //ANSWERS(S)✔✔"3.03.0"



Which /
/of //the //following //pandas //methods //will //report //summary //statistics //of //numeric //columns?



A. //head()

B. //tail()

C. //info()

D. //describe() //- //CORRECT //ANSWERS(S)✔✔D. //describe()



Suppose /
/we /


/have //


a/

, /data /
/frame /


/df, /


/which /


/includes //


a/
/column /


/animal. //


I/
/would /


/like /


/to /


/count /


/the /


/number /


/of /


/times //each //animal //appears //in //the //column, //e.g. //Elephant: //8, //Zebra: //7, //etc. //Which //of //the


//following //commands //can //I //use //to //do //that?



A. //df["animal"].value_counts()

B. //df["animal"].value_counts(normalize=True)

C. //df.value_counts().animal()

D. //value_counts(df["animal"]) //- //CORRECT //ANSWERS(S)✔✔A. //df["animal"].value_counts()



Which /
/option /


/will /


/help /


/us //select //elements //"a" //and //"b" //in //the //list //L //= //["a", //"b", //"c"]? //(Select //all //that //apply.)



A. //L[0:2]

B. //L[1:2]

C. //L[-3:-2]

D. //L[-3:-1] //- //CORRECT //ANSWERS(S)✔✔A. //L[0:2] //AND //D. //L[-3:-1]