01. True or false? The dataset provided represents the entire year range from 2000 to 2020 for at least some countries.

03.

Which of the following observations best represents the distribution of the year column?

Nothing can be said about the distribution because we have too few data points.

The distribution is neither normal nor negatively or positively skewed since there are two distinct peaks.

The distribution is positively skewed since the peak is to the left of the number line.

The distribution is negatively skewed since the peak is to the left of the number line.

Integrated project: Access to drinking water

Transforming the data MCQs

02. What is the average year difference across all countries for the dataset?

04.

What is the average Annual Rates of Change (ARC) of access to basic water services for rural populations (ARC_r) across all countries?

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05.

How many countries' national populations had a 0% Annual Rates of Change, excluding countries that have 100% access, across the time period?

07. Which two countries had the highest absolute difference between urban and rural Annual Rates of Change?

Integrated project: Access to drinking water

Transforming the data MCQs

06.

Considering that a negative Annual Rates of Change (ARC) indicates a decrease in access to water from one year to the next, and a zero ARC indicates no change, which of the following statements is most true based on the data?

Although access to basic water services on a national level remained unchanged for more countries than in rural and urban areas, rural areas had the greatest decrease in access.

Although access to basic water services increased for more countries in rural areas than on a national level, more countries had full access to basic water services in urban areas.

Most countries had a similar change in access to basic water services across all types of population areas.

Although access to basic water services on a national level increased for more countries, more countries

had a decrease in access in urban than rural areas.

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09.

On average, which region saw the greatest improvement in access to basic water services on a national level (considering the Annual Rates of Change) over the dataset time period?

Integrated project: Access to drinking water

Transforming the data MCQs

08.

Which of the following statements is most true about the distribution of the difference in ARC values between rural and urban areas?

More countries had higher Annual Rates of Change in urban areas than in rural areas since a greater number of difference values fell to one side of the number line.

The Annual Rates of Change were similar across urban and rural areas for most countries since the peak is close to the middle of the number line.

More countries had higher Annual Rates of Change in rural areas than in urban areas since a greater number of difference values fell to one side of the number line.

We cannot say anything about the distribution because some of the histogram bins are empty.

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Integrated project: Access to drinking water

Understanding the data MCQs

10.

Based on the visualization investigating the relationship between the rural and national Annual Rates of Change, national population size, and region, which of the following statements are true?

Only countries in the Sub-Saharan Africa region observed a decrease in basic water access on a national level and in rural areas.

The average population size per country in Sub-Saharan Africa is smaller than that of most other regions.

Countries in the sub-Saharan Africa region observed a greater spread in rural and national ARC values than

other regions.

Countries with larger populations generally observed national ARC values between 0% and 1%.