Presentation-Assignment05

Christina Dai

2026-02-25

WDI 2022 Exploratory Data Analysis

Primary school enrollment • Life expectancy • Unemployment rate

Conducting Exploratory Data Analysis

In this report we will be focusing on the following 3 variables in order to better understand the global landscape in 2022:

  1. primary_school_enrolment_rate: measures the percentage of children of official primary school age who are enrolled in primary education.

  2. life_expectancy: is the average number of years someone is expected to live

  3. unemployment_rate: measures the percentage of the total labor force that is without work but are able to work/ looking for work.

Primary School Enrollment EDA

Mean: 100.87404840034348
Median: 100.0222473144529
Standard Deviation: 12.037531967222588

Life Expectancy EDA

Mean: 72.4165186136072
Median: 73.5146341463415
Standard Deviation: 7.713322276991691

Unemployment Rate EDA

Mean: 7.268661290322581
Median: 5.5375
Standard Deviation: 5.827726289581319

Scatterplot (life expectancy vs unemployment rate)

Figure 1: Life expectancy vs. unemployment rate in 2022. Source: World Bank (2022).

Histogram (primary school enrollment rate)

Figure 2: Primary school enrolment rate distribution (WDI 2022). Source: World Bank (2022).

Key Statistics

Table 1: Key summary statistics for selected indicators (WDI 2022). Source: World Bank (2022).
Mean Median Standard Deviation Minimum Maximum
primary_school_enrolment_rate 100.874048 100.022247 12.037532 64.395401 138.192001
life_expectancy 72.416519 73.514634 7.713322 52.997000 85.377000
unemployment_rate 7.268661 5.537500 5.827726 0.130000 37.852000

Conclusion

  • Negative relationship: As shown in @fig-life-unemployment, higher unemployment is generally associated with lower life expectancy.

  • Supported by research: Prior studies link long-term unemployment to reduced life expectancy and greater disability [@laditka_unemployment_disability_life_expectancy_2016; @assari_employment_life_expectancy_2017].

  • Enrollment pattern: @fig-enrolment-hist shows primary school enrollment rates are centered near 100%.

  • >100% explained: Rates above 100% occur because gross enrollment includes over- and under-aged students.

  • Indicator variation: @tbl-key-stats highlights differences in spread and central tendency across variables.

World Bank. 2022. “World Development Indicators.” World Bank Open Data. https://databank.worldbank.org/source/world-development-indicators.