A museum tracked attendance by day of week during a special exhibit. A staff report claims weekend days drew far more visitors than weekdays; specifically, the average of Saturday and Sunday exceeded the average of Monday through Friday by about .
Which choice most effectively uses data from the table to complete the text?
- 680 visitors (1,640 vs 960) (correct answer)
- 560 visitors (1,520 vs 960)
- 400 visitors (1,640 vs 1,240)
- 320 visitors (1,520 vs 1,200)
Explanation: The claim states that the average of weekend days (Saturday and Sunday) exceeded the average of weekdays (Monday through Friday), so we need to calculate both averages. Weekend average: (1,760 + 1,520) ÷ 2 = 1,640 visitors. Weekday average: (820 + 860 + 910 + 980 + 1,240) ÷ 5 = 960 visitors. The difference is 1,640 - 960 = 680 visitors. Choice B incorrectly calculates the weekend average as 1,520, Choice C uses 1,240 as the weekday average (which is just Friday), and Choice D makes errors in both calculations. When finding averages, sum all values in the group and divide by the count.