Final Answer:
If someone says that X is highly correlated with Y, what can be true.
Therefore, the correct options would be:
1) X and Y have a strong linear relationship
3) X and Y have a positive correlation
Step-by-step explanation:
If someone says that X is highly correlated with Y, it implies that there is a strong statistical relationship between X and Y. Therefore, the correct options would be:
1) X and Y have a strong linear relationship
3) X and Y have a positive correlation
Correlation can be positive or negative, indicating the direction of the relationship, and it can be strong or weak, indicating the strength of the relationship. If the correlation is positive, it means that as X increases, Y also tends to increase. If the correlation is negative, it means that as X increases, Y tends to decrease. The strength of the correlation is determined by how closely the data points align along a line.