The dot plots show the gas mileage for randomly selected cars and SUVs. Which data values do both distributions have in common?
Gas Mileage (miles/gallon) - Cars:
18 has 1 dot
19 has 2 dots
20 has 3 dots
21 has 2 dots
22 has 1 dot
Gas Mileage (miles/gallon) - SUVs:
21 has 1 dot
22 has 1 dot
23 has 2 dots
24 has 2 dots
25 has 3 dots