AP®︎ Statistics: Topic 1.5 Flashcards

Graph of one quantitative variable with one dot for each observation placed at its value on a numerical axis; repeated values stack

Graph of one quantitative variable that splits each value into a stem and a leaf, orders stems and leaves from smallest to largest, and includes a key so the values can be read

Graph of one quantitative variable that groups observations into ordered, nonoverlapping intervals called bins; bar height shows the frequency or relative frequency in each bin, and changing bin width or boundaries can change the appearance

In a stemplot, a note that shows how to read the stems and leaves and includes the units, such as 2|4 = 24 minutes

A stemplot convention that divides one stem into two rows, often leaves 0–4 and 5–9, to make a crowded display easier to read

Histogram: quantitative variable, ordered numerical intervals, bars represent bins and usually touch. Bar chart: categorical variable, bars represent categories and are usually separated

Two histogram scales: frequency uses counts on the vertical axis; relative frequency uses proportions or percents. With the same bins, they have the same shape and differ only in vertical scale