Final answer:
The correlation between atmospheric pressure and cloud cover is negative.
Step-by-step explanation:
The correlation between atmospheric pressure and cloud cover can be best described as negative correlation. As atmospheric pressure decreases, cloud cover tends to increase, and vice versa. This is because changes in atmospheric pressure influence the movement and stability of air masses, which in turn affect the formation and dissipation of clouds. For example, low-pressure systems are often associated with unsettled weather and higher cloud cover, while high-pressure systems are typically associated with clear skies and lower cloud cover.
Learn more about Correlation between atmospheric pressure and cloud cover