The data in the table below shows the percent who smoke for people age 25 and ol
ID: 3201362 • Letter: T
Question
The data in the table below shows the percent who smoke for people age 25 and older in the U.S. for the years from 1960 to 2005 by education level. The given JMP output shows time series graphs of percent who smoke for each education level.
a. Consider the time series graph for percent who smoke for people with some college, but not a bachelor's degree. Which of the following can be used to describe the trend over time?
The trend is nonlinear. OR
The trend is approximately linear.
b. In what year did the percent who smoke for people with no high school equal the percent who smoke for people with high school, no college?
c. Consider the time series graph for percent who smoke for people with some college, but not a bachelor's degree. Which of the following can be used to describe the trend over time?
The percent who smoke has not changed much over time. OR
The percent who smoke is decreasing over time. OR
The percent who smoke is increasing over time.
d. Which of the following could be used to describe the four time series graphs shown in the JMP output? (Select all that apply.)
o The percent who smoke is decreasing over time for all four education levels.
o The percent who smoke has declined at about the same rate for all four education levels.
o The trend for all four education levels is approximately linear.
e. For which education level has the change over time been the greatest?
not a high school graduate (no HS)
high school graduate, no college (HS)
some college
B.A. or higher
v Time Series Smoke% 50 45 40 35 300 E 25 20 15 10 1080 1070 1080 Year Groups Education BA or higher Education-HS Education No HS Education some college 1990Explanation / Answer
Solution:-
a) The trend is approximately linear.
b) In year 1990 the percent who smoke for people with no high school equal the percent who smoke for people with high school, no college
c) The percent who smoke is decreasing over time.
The time series graph for percent who smoke for people with some college, but not a bachelor's degree is decreasing over time.
d)The percent who smoke is decreasing over time for all four education levels.
The trend for all four education level is approximately linear.
e) For the B.A or higher education level the smoking percentage has changed greatest over the time.
Change for not a high school graduate (no HS) = 44 - 32 = 12
Change for high school graduate, no college (HS) = 42 - 28 = 14
Change for some college = 48 - 22 = 26
Change for B.A. or higher = 44 - 10 = 34
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