In a national survey conducted by the Centers for Disease Control to determine health-risk behaviors among college students, college students were asked, “How often do you wear a seat belt when riding in a car driven by someone else?” The frequencies were as follows:
Response ...... Frequency
Never ......... 125
Rarely ......... 324
Sometimes ....... 552
Most of the time .... 1257
Always ......... 2518
(a) Construct a relative frequency distribution.
(b) What percentage of respondents answered “Always”?
(c) What percentage of respondents answered “Never” or “Rarely”?
(d) Construct a frequency bar graph.
(e) Construct a relative frequency bar graph.
(f ) Construct a pie chart.
(g) Suppose that a representative from the Centers for Disease Control says, “52.7% of all college students always wear a seat belt.” Is this a descriptive or inferential statement?