These questions all relate to Python.

$1.$ Which of the following code will plot a histogram graph using a column of a Pandas data frame? The name of your data frame is df$\_$data and you want to plot the column named $$age$($column name$).($Select ALL that apply.$)$

a$.$ df$\_$data.hist$($column$=$'age'$)$

b$.$ plt$.$hist$($x$=$df$\_$data.age$)$

c$.$ df$\_$data.age.hist$()$

d$.$ df$\_$data$[\text{'}$age$\text{'}].$hist$()$

$2.$ You have the following data frame called df$\_$grapes $($data frame attached in image$)$ that contains data related to the harvest of grapes per region in South Australia. Which of the following code will show you all of the data frame? $($Select ALL that apply.$)$

a$.$ df$\_$grape.head$()$

b$.$ df$\_$grapes$[$:$]$

c$.$ df$\_$grapes$[$::$]$

d$.$ df$\_$grapes$[[$::$],[$::$]]$

$3.$ You have the following data in the df$\_$grapes data frame $($data frame attached in image$)$:

Which of the following code you should use to slice it to get the data frame shown? $($Select ALL that apply.$)$

a$.$ df$\_$grapes$[4$:$8]$

b$.$ df$\_$grapes$[\text{'}$Pinot noir':'Other Red'$]$

c$.$ df$\_$grapes$[4$:$7]$

d$.$ df$\_$grapes$[3$:$7]$

$4.$ When you have missing data in Pandas, what is the default value that Pandas uses to fill the missing data?

a$.-1$

b$.$ N$/$A

c$.$ Blank space

d$.$ NaN

e$.0$

$5.$ Which of the following combination of functions can count the missing data in a Series or Data Frame? $($Select ALL that apply.$)$

a$.$ isnull$().$count$()$

b$.$ isna$().$sum$()$

c$.$ isNaN.count$()$

d$.$ isna.count$()$

e$.$ isnull$().$sum$()$