One disadvantage of a stem-and-leaf plot is that it does not display the data items. _______ 10. A deception in the visual display of data can result by stretching or compressing the scale on a graph's vertical axis. _______ 7. A sample is the set of all the people or objects whose properties are to be described and analyzed by the data collector. _______ 8. A call-in poll on radio or television is not reliable because the sample is not chosen randomly from a larger population. _______