AP Statistics / Unit 1: Exploring One-Variable Data and Collecting Data
1.5 Graphical Representations for One Quantitative Variable
Notes
- Dotplot: a dot per value.
- Stemplot: stems and leaves; keeps the data values.
- Histogram: bars over intervals of values (touching).
- Cumulative graph: percent at or below each value.
Practice
Which display keeps every original data value?
Leaves show the actual digits.
In a histogram, the bars:
Quantitative intervals.
A dotplot is best for:
It shows each value.
Ready for more? Take the Unit 1 test.