AP Statistics Semester 1 Exam Review
(Multiple Choice Section) UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Which of the following statements is NOT true? - CORRECT ANSWER The median is
always greater than the mean
"Normal" body temperature varies by time of day. A series of readings was taken of the body
temperature of the subject. the mean reading was found to be 36.5°C with a standard
deviation of 0.3°C. when converted into °F, the mean and standard deviation are
(°F=°C(1.8)+32): - CORRECT ANSWER 97.7, .54
Which of the following is likely to have a mean that is smaller than the median? - CORRECT
ANSWER The scores of students (out of 100 points) on a very easy exam in which
most get nearly perfect scores but a few do very poorly
There are three children in a room, ages three, four, and five. If a four year old child enters
the room the - CORRECT ANSWER mean age will stay the same but the variance will
decrease
When testing water for the chemical impurities, results are often reported as bdl, that is,
below detection limit. The following are the measurements of the amount of lead in a series
of water samples taken from inner-city house holds (in parts per million):
5, 7, 12, bdl, 10, 8, bdl, 20, 6
Which of the following is correct? - CORRECT ANSWER The median lead level in
the water is 7 ppm
For the density curve shown, which statement is true? - CORRECT ANSWER the area
under the curve between 0 and 1 is 1
For the density curve in the last problem, which statement is true ? - CORRECT
ANSWER The mean is less than the median
(Multiple Choice Section) UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Which of the following statements is NOT true? - CORRECT ANSWER The median is
always greater than the mean
"Normal" body temperature varies by time of day. A series of readings was taken of the body
temperature of the subject. the mean reading was found to be 36.5°C with a standard
deviation of 0.3°C. when converted into °F, the mean and standard deviation are
(°F=°C(1.8)+32): - CORRECT ANSWER 97.7, .54
Which of the following is likely to have a mean that is smaller than the median? - CORRECT
ANSWER The scores of students (out of 100 points) on a very easy exam in which
most get nearly perfect scores but a few do very poorly
There are three children in a room, ages three, four, and five. If a four year old child enters
the room the - CORRECT ANSWER mean age will stay the same but the variance will
decrease
When testing water for the chemical impurities, results are often reported as bdl, that is,
below detection limit. The following are the measurements of the amount of lead in a series
of water samples taken from inner-city house holds (in parts per million):
5, 7, 12, bdl, 10, 8, bdl, 20, 6
Which of the following is correct? - CORRECT ANSWER The median lead level in
the water is 7 ppm
For the density curve shown, which statement is true? - CORRECT ANSWER the area
under the curve between 0 and 1 is 1
For the density curve in the last problem, which statement is true ? - CORRECT
ANSWER The mean is less than the median
