which library we import if we want to draw chart

• numpy

• matplotlib

• pandas

if we want to create data frame we import

• numpy

• matplotlib

• pandas

to join 2 arrays under each other we use the function

• vstack()

• hstack()

• append()

to add a title in the chart we use the function

• title("title of the chart")

• plt.title("title of the chart")

• plt.title(title of the chart)

we can not change the color of the chart

• false

• true

we use the function to change rows to columns and columns to rows

• reshape()

• array()

• transpose()

we use this function to get the average of array

• avg()

• average()

• mean()

to create an array with only 5 zeroes

• x=np.zeroes(5)

• np.zeroes()

• np.zeroes(5)

to change the header in data frame we use

• headers and columns

• index and columns

• rows and columns

to get an element in data frame we use the function

• get()

• find()

• loc()