Variable Types
Output or Error
Numpy Methods
Tables
100
What kind of variable is this "1"? 
String
100
destination = make_array('Boston', 'Los Angeles', 'London', 'Beijing', 'Sydney')
np.random.choice(destination)
What is any of those locations (Boston', 'Los Angeles', 'London', 'Beijing', 'Sydney')
100
Explain np.unique
It removes duplicates and returns the values in a sorted order
100
DropNa
Deletes the rows with missing values
200
pi = 3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 8214808651 3282306647 0938446095 5058223172 5359408128 4811174502 8410270193 8521105559 6446229489 5493038196 4428810975 6659334461 2847564823 3786783165 2712019091 4564856692 3460348610 4543266482
Float
200
destination = make_array('Boston', 'Los Angeles', 'London', 'Beijing', 'Sydney')
np.random.choice(destnation)
Error
200
np.arange(1,21,2)
Explain the first, second, and last position in the arange function and tell me what it does.
first position is a starting point, middle: final number excluding the one written, and end: how many the list increases by.
200
What is .column used for and what does it do
.column calls all the values in the column allowing you to use other functions like .mean and 5 number summary if made
300
67
Integer
Heheheheheheheheheeee
300
eight_destinations = make_array('Los Angeles', 'Boston', 'Sydney', 'Beijing', 'Sydney', 'London', 'Boston', 'London' )
number_London = np.count_nonzero(eight_destinations== 'London') number_London
2
300
.where
The dataset comes before and you select the column first then the value you want
300
.take/indexing
This lets you call a value by its position through the column and row.
400
Am_i_a_duck = True
Boolean
400
def pizza_price(pizza):
if pizza == 'cheese':
return 10
elif pizza == 'veggie':
return 12
elif pizza == 'pepperoni':
return 13
else:
return 15
plain_price = pizza_price('cheese')
plain_price
10
400
.num_rows
Counts the number of rows in the dataset
400
What does descending=True mean?
It will make your Data move from largest to smallest based off of the column in the dataset you call.
500
Hi = []
Array
500
what is the output 3 == 1
False
500
.append
It will add the 2 datasets together.
500
What function is descending/ascending = True used on?
.where and .sort