240 74

235. 72
230. 71

Is there relationship between the two sets of data, how do you know?

Based on the provided data, it appears that as the first set of data (240, 235, 230) decreases, the second set of data (74, 72, 71) also decreases. This suggests that there may be a negative relationship between the two sets of data, meaning that as one set decreases, the other set also decreases. This relationship can be further confirmed by calculating the correlation coefficient between the two sets of data.