A man surveyed a sample of 36 high school students and asked, "How many days in the past week have you consumed an alcoholic beverage?" The results of the survey are shown to the right. Use these results to answer parts (a) through (f). 0 1 0 0 0 0 1 0 0 1 0 4 1 5 1 2 0 1 2 0 1 1 0 1 2 0 1 0 1 0 0 1 1 2 3 2 (d) Compute the mean and median. What does this tell you?
A man surveyed a sample of 36 high school students and asked, "How many days in the past week have you consumed an alcoholic beverage?" The results of the survey are shown to the right. Use these results to answer parts (a) through (f). 0 1 0 0 0 0 1 0 0 1 0 4 1 5 1 2 0 1 2 0 1 1 0 1 2 0 1 0 1 0 0 1 1 2 3 2 (d) Compute the mean and median. What does this tell you?
Chapter5: Decimals
Section5.5: Averages And Probability
Problem 399E: Joaquin gets paid every Friday. FI is paychecks for the past 8 Fridays were $315, $236.25, $236.25,...
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A man surveyed a sample of 36 high school students and asked, "How many days in the past week have you consumed an alcoholic beverage?" The results of the survey are shown to the right. Use these results to answer parts (a) through (f).
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(d) Compute the mean and median. What does this tell you?
The mean is ______________.
(Type an integer or decimal rounded to two decimal places as needed.)
The median is ___________.
(Type an integer or decimal rounded to two decimal places as needed.)
What do the computed mean and median tell you? Fill in the blanks below. (Use a 25% difference as the criterion for a "substantial" difference between the mean and median.)
The prediction was
because the mean
▼
incorrect
correct
▼
is not equal to
is greater than
is substantially smaller than
is less than
is substantially larger than
is equal to
the median in this distribution.
(e) Determine the mode .
The mode is ____________.
(Type an integer or decimal rounded to two decimal places as needed.)
(f) Do you believe that the survey suffers from bias? If so, what type and why?
A.
Yes, the survey suffers from response bias because it would be difficult to achieve truthful responses to this type of question unless the identity of the respondents is anonymous.
Yes, the survey suffers from sampling bias because the number of male and female students surveyed was the same.
Yes, the survey suffers from sampling bias because the number of male and female students surveyed was not the same.
No, the survey does not suffer from bias because it was administered randomly and the question asked is in balanced form.
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