Riley measured the temperature on her classroom window every morning of school for the last two weeks. She recorded the following temperatures.

23°C, 23°C, 24°C, 25°C, 23°C, 19°C, 20°C, 23°C, 21°C, 20°C

Part A:
Graph the data Riley collected in a dot plot.

Part B:
What is the spread of the data Riley collected?