A way to see if two things change together. If they change the same way, the covariance is positive. If they change opposite ways, it's negative. If they don't change together, it's zero.
We noticed a positive covariance between the number of hours studied and test scores.
학습 시간과 시험 점수 사이에 긍정적인 공분산을 발견했습니다.
It's like seeing how two things move together. If they move the same way, it's similar. This can help us understand how things are connected.
The covariance of two stocks can show if they tend to go up or down together.
두 주식의 공분산은 그들이 함께 상승하거나 하강하는 경향이 있는지 보여줍니다.