A climograph is a graph that combines precipitation and temperature data of a selected station for an extended period of time (Fig. 15.7). Precipitation is represented by a bar chart, while a line graph is used to represent temperature data.
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Fig. 15.7 Climograph for Paris, 2015.
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CHECK YOUR LEARNING Examine the climograph in Figure 15.7 above and answer each of the following questions.
1. Which month recorded the lowest average temperature? (Name the month and state the temperature). 2. Which month recorded the highest average temperature? (Name the month and state the temperature). 3. What was the total annual rainfall amount for Paris for 2014? 4. What was the annual temperature range for 2014? 5. Which months recorded average temperatures above 15°C?
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Temperature range: The difference between the highest and lowest recorded temperatures in a given data set.
Scatter graph
A scatter graph is used to show the relationship (correlation) between two data sets. A positive correlation sees both factors moving in the same direction, as in Figure 15.8. In the example, as the GDP (gross domestic product) per capita increases, so too does the life expectancy rate, suggesting a positive correlation. A negative correlation would see the values on the y-axis decrease as those on the x-axis increase.
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Fig. 15.8 Scatter graph showing the relationship between GDP and life expectancy.
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0 0 10 20 30 40 50 60 Per capita GDP (000 US $) 70 80
