Exam 1

Question 1

Dataframes is tabular data with built-in functions (True or False)

Answer 1

True

Question 2

Integer

Answer 2

whole number

Question 3

Float

Answer 3

has decimal

Question 4

Boolean

Answer 4

True or False

Question 5

String

Answer 5

in quotations

Question 6

df.head()

df.describe()

After running those exact lines in a cell, the output of the cell will show the first 5 rows of the dataframe, followed by the statistics of the numeric columns. (True or False)

Answer 6

False

Question 7

type(a)

type(b)

type(c)

type(d)

The exact lines of code above are executed in a code cell after a, b, c, and d are created. The output in the cell will be the data types of a, b, c, and d. (True or False)

Answer 7

False

Question 8

a = 3

b = 9

a = b / a

print(a)

The output displays:

3.0

(True or False)

Answer 8

True

Question 9

def my_average(num1, num2, num3):

avg = (num1 + num2 + num3) / 3

return avg

avg_ret = my_average(1, 3, 2)

What is the data type of avg_ret?

Answer 9

Float

Question 10

If we wanted to replace all NaNs with a known value, we would use which function?

Answer 10

Mean