2.3 stem-and-leaf and dotplots

Question 1

stem-and-leaf plots

Answer 1

simple way to display small data sets

Question 2

back-to-back stem-and-leaf plot

Answer 2

when two data sets have values similar enough so that the same stems can be used

Question 3

split stem-and-lead plot

Answer 3

provides for more detail and may be more appropriate for bigger sets of data. the stems are duplicated into two rows, the first row has the numbers 0-4 and the second row 5-9

Question 4

dotplot

Answer 4

a grapgh that can be used to show where the values are concentrated and where the gaps are; useful for when the data set is not too large and when there are some repeated values