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Gwangju

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The Pearson correlation coefficient of the average annual wind speed between Gwangju and the year is 0.51, which has a distinct positive linear relationship. This means that there is a clear relationship between year and average annual wind speed. The slope of the trend line in Gwangju's annual average wind speed graph is -0.03, which is a negative number. This means that the average annual wind speed is decreasing over the years.

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The Pearson correlation coefficient of the annual average find dust concentration in Gwangju and year is 0.51, which has a distinct positive linear relationship. This means that year and annual average find dust concentration have a distinct relationship. The slope of the trendline of the annual average find dust concentration graph in Gwangju is –0.72, which is a negative number. This means that annual average find dust concentration is decreasing over the years.

1. Wind Speed 

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 Months with a strong relationship are September with a value of -0.78. The weakest relationship month is –0.30 Dec. The smallest incline month is December with -0.048. The month with the greatest slope is July, which is –0.0473. In other words, the average discovered wind speed decreased the most in July and the least in December. December coefficient of determination (R^2) is 0.0882, which is very small compared to other months. December's average wind speed fluctuates and is unreliable. The month closest to 1 is September, with a value of 0.6025.

2. PM10

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The month with the strongest relationship is September with a value of -0.74. The weakest relationship month is May -0.09. It has a relationship that is almost negligible relativity. The month with the smallest incline is May, -0.1191. The month with the highest slope is March, which is –1.1079, indicating that the average found dust concentration decreased the most in March and the smallest in May. The May coefficient of determination (R^2) is 0.0077, which is very small compared to other months. It tells us that the average fine dust concentration in May fluctuated compared to other months. The month closest to 1 is September, with a value of 0.05539.

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