In R Studio, load the `tidyverse` library and the data file provided above.

From the data set:

1. Filter the data so that you are only examining data for New Zealand.
2. Arrange the data in descending order by GDP per capita.

In the dataset, what was the highest value of New Zealand’s GDP per capita? Please answer to two decimal places, with no dollar sign, in the units of the dataset (eg. 14463.92).

Question

In R Studio, load the `tidyverse` library and the data file provided above.

From the data set:

1. Filter the data so that you are only examining data for New Zealand.
2. Arrange the data in descending order by GDP per capita.

In the dataset, what was the highest value of New Zealand’s GDP per capita? Please answer to two decimal places, with no dollar sign, in the units of the dataset (eg. 14463.92).

BlackTom AI · Accepted Answer

To solve this, begin by loading the tidyverse package in R Studio to access data manipulation tools such as dplyr and readr. Next, bring in the provided dataset so you can inspect its structure and identify the column that contains GDP per capita values.

Step 1: Filter for New Zealand data only. This typically involves a filter operation that selects rows where the country column equals 'New Zealand' (or the corresponding country code if used in the dataset). Filtering narrows the dataset to the records relevant for the question.

Step 2: Sort the filtered data by GDP per capita in descending order. You would arrange or arrange(desc()) by the GDP per capita column so that the largest value appears first. This step makes it straightforward to identify the highest GDP per capita among New Zealand records.

Step 3: Retrieve the highest GDP per capita value. Since the data has been sorted in descending order, the GDP per capita value in the first row of the filtered dataset represents the maximum for New Zealand. If you want to be robust, you could also compute max(GDP_per_capita) on the filtered data, but sorting provides a clear, reproducible way to confirm the top entry.

Step 4: Format the result as a numeric value with two decimal places and no currency symbol. Use format or round to two decimals, ensuring there is no preceding dollar sign or other symbols, and present the value exactly as a numeric string like 14463.92 (without a "$" sign).

Conceptual notes and potential pitfalls:
- Confirm the correct GDP per capita column name in your dataset (sometimes named gdp_per_capita, GDP_per_capita, or similar). The exact name dictates how you reference it in filter and arrange operations.
- If the dataset includes multiple years, you might need to filter additionally by year to obtain a single value; otherwise, you may consider taking the maximum across years for New Zealand.
- Be mindful of missing values (NA) in the GDP per capita column; you should omit or handle NAs to avoid miscomputing the maximum.

Summary of the approach in plain terms: Narrow the data to New Zealand, put the rows in order from highest to lowest GDP per capita, take the top value, and present it as a two-decimal numeric string without a dollar sign. If everything is executed correctly, you should obtain the value that corresponds to the peak GDP per capita for New Zealand in the dataset, formatted as a number with two decimals.

2025-HS1-ECO80001-Economics-H1 Assessment 1 - Online Micro Quiz

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