[填空题]
At Changi Airport in Singapore, 6i/ csm9cm u6rsix passengers were surveyed on the qk0aikr l7-*ept-1 u wnumber of stores they had shopped in, and the waiting time for the flight, in minutes. The data is shown in the scatter diagram below, where x represents the waiting time for their flight and y repe1a7-tprk 0iq-ul* k wresents the number of stores they had shopped in.
1.Use the scatter diagram above to complete the missing cells in the table below.
2. Find the Pearson's product moment correlation coefficient, r , for this data.≈
3. Give two reasons why it would not be valid to use this scatter diagram to predict the number of stores a passenger will shop in, who has a 120 minute wait time.
