Parameterized reports in R Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a parameterized report that accepts a year input.

R Programming

params <- list(year = [1])
report <- render_report('sales_report.Rmd', params = params)

Drag options to blanks, or click blank then click option'

A'2023'

Byear

C2023

Dinput$year

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the year as a number without quotes causes errors.

Using variable names instead of actual values.

The year parameter should be passed as a string, so it needs quotes.

2fill in blank

medium

Complete the code to filter data by the parameter 'region' inside the report.

R Programming

filtered_data <- subset(data, region == [1])

Drag options to blanks, or click blank then click option'

A'region'

Bparams$region

Cregion

D'params$region'

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around params$region treats it as a string literal.

Using the column name 'region' instead of the parameter value.

Use params$region to access the parameter value inside the report.

3fill in blank

hard

Fix the error in the code to correctly pass multiple parameters to the report.

R Programming

params <- list(year = [1], region = 'North')

Drag options to blanks, or click blank then click option'

Ayear

B2022

Cparams$year

D'2022'

Attempts:

3 left

💡 Hint

Common Mistakes

Passing year as a number without quotes.

Using variable names instead of actual values.

Parameter values must be strings, so the year should be in quotes.

4fill in blank

hard

Fill both blanks to create a parameterized filter for sales data.

R Programming

filtered_sales <- subset(sales, [1] == [2])

Drag options to blanks, or click blank then click option'

Aregion

Bparams$region

C'region'

D'params$region'

Attempts:

3 left

💡 Hint

Common Mistakes

Putting quotes around the parameter variable.

Using the parameter name as a string instead of the column name.

The first blank is the column name region, the second is the parameter value params$region.

5fill in blank

hard

Fill all three blanks to create a parameterized summary report filtering by year and product.

R Programming

summary_data <- subset(data, [1] == [2] & [3] == params$product)

Drag options to blanks, or click blank then click option'

Ayear

Bparams$year

Cproduct

D'year'

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around parameter variables.

Mixing up column names and parameter names.

The first blank is the column year, the second is the parameter params$year, and the third is the column product.